Pin

from WordNet (r) 3.0 (2006)
pin
    n 1: a piece of jewelry that is pinned onto the wearer's garment
    2: when a wrestler's shoulders are forced to the mat [syn:
       {fall}, {pin}]
    3: small markers inserted into a surface to mark scores or
       define locations etc. [syn: {peg}, {pin}]
    4: a number you choose and use to gain access to various
       accounts [syn: {personal identification number}, {PIN}, {PIN
       number}]
    5: informal terms for the leg; "fever left him weak on his
       sticks" [syn: {pin}, {peg}, {stick}]
    6: axis consisting of a short shaft that supports something that
       turns [syn: {pivot}, {pin}]
    7: cylindrical tumblers consisting of two parts that are held in
       place by springs; when they are aligned with a key the bolt
       can be thrown [syn: {pin}, {pin tumbler}]
    8: flagpole used to mark the position of the hole on a golf
       green [syn: {pin}, {flag}]
    9: a small slender (often pointed) piece of wood or metal used
       to support or fasten or attach things
    10: a holder attached to the gunwale of a boat that holds the
        oar in place and acts as a fulcrum for rowing [syn: {peg},
        {pin}, {thole}, {tholepin}, {rowlock}, {oarlock}]
    11: a club-shaped wooden object used in bowling; set up in
        triangular groups of ten as the target [syn: {bowling pin},
        {pin}]
    v 1: to hold fast or prevent from moving; "The child was pinned
         under the fallen tree" [syn: {trap}, {pin}, {immobilize},
         {immobilise}]
    2: attach or fasten with pins or as if with pins; "pin the
       needle to the shirt". "pin the blame on the innocent man"
       [ant: {unpin}]
    3: pierce with a pin; "pin down the butterfly"
    4: immobilize a piece
    
from The Collaborative International Dictionary of English v.0.48
Pin \Pin\, v. t. [imp. & p. p. {Pinned}; p. pr. & vb. n.
   {Pinning}.] [See {Pin}, n.]
   To fasten with, or as with, a pin; to join; as, to pin a
   garment; to pin boards together. "As if she would pin her to
   her heart." --Shak.
   [1913 Webster]

   {To pin one's faith upon}, to depend upon; to trust to.
      [1913 Webster]
    
from The Collaborative International Dictionary of English v.0.48
Pin \Pin\, v. t. (Metal Working)
   To peen.
   [1913 Webster]
    
from The Collaborative International Dictionary of English v.0.48
Pin \Pin\, v. t. [Cf. {Pen} to confine, or {Pinfold}.]
   To inclose; to confine; to pen; to pound.
   [1913 Webster]
    
from The Collaborative International Dictionary of English v.0.48
Pin \Pin\, n. [OE. pinne, AS. pinn a pin, peg; cf. D. pin, G.
   pinne, Icel. pinni, W. pin, Gael. & Ir. pinne; all fr. L.
   pinna a pinnacle, pin, feather, perhaps orig. a different
   word from pinna feather. Cf. {Fin} of a fish, {Pen} a
   feather.]
   1. A piece of wood, metal, etc., generally cylindrical, used
      for fastening separate articles together, or as a support
      by which one article may be suspended from another; a peg;
      a bolt.
      [1913 Webster]

            With pins of adamant
            And chains they made all fast.        --Milton.
      [1913 Webster]

   2. Especially, a small, pointed and headed piece of brass or
      other wire (commonly tinned), largely used for fastening
      clothes, attaching papers, etc.
      [1913 Webster]

   3. Hence, a thing of small value; a trifle.
      [1913 Webster]

            He . . . did not care a pin for her.  --Spectator.
      [1913 Webster]

   4. That which resembles a pin in its form or use; as:
      (a) A peg in musical instruments, for increasing or
          relaxing the tension of the strings.
      (b) A linchpin.
      (c) A rolling-pin.
      (d) A clothespin.
      (e) (Mach.) A short shaft, sometimes forming a bolt, a
          part of which serves as a journal. See Illust. of
          {Knuckle joint}, under {Knuckle}.
      (f) (Joinery) The tenon of a dovetail joint.
          [1913 Webster]

   5. One of a row of pegs in the side of an ancient drinking
      cup to mark how much each man should drink.
      [1913 Webster]

   6. The bull's eye, or center, of a target; hence, the center.
      [Obs.] "The very pin of his heart cleft." --Shak.
      [1913 Webster]

   7. Mood; humor. [Obs.] "In merry pin." --Cowper.
      [1913 Webster]

   8. (Med.) Caligo. See {Caligo}. --Shak.
      [1913 Webster]

   9. An ornament, as a brooch or badge, fastened to the
      clothing by a pin; as, a Masonic pin.
      [1913 Webster]

   10. The leg; as, to knock one off his pins. [Slang]
       [1913 Webster]

   {Banking pin} (Horol.), a pin against which a lever strikes,
      to limit its motion.

   {Pin drill} (Mech.), a drill with a central pin or projection
      to enter a hole, for enlarging the hole, or for sinking a
      recess for the head of a bolt, etc.; a counterbore.

   {Pin grass}. (Bot.) See {Alfilaria}.

   {Pin hole}, a small hole made by a pin; hence, any very small
      aperture or perforation.

   {Pin lock}, a lock having a cylindrical bolt; a lock in which
      pins, arranged by the key, are used instead of tumblers.
      

   {Pin money}, an allowance of money, as that made by a husband
      to his wife, for private and personal expenditure.

   {Pin rail} (Naut.), a rail, usually within the bulwarks, to
      hold belaying pins. Sometimes applied to the {fife rail}.
      Called also {pin rack}.

   {Pin wheel}.
       (a) A contrate wheel in which the cogs are cylindrical
           pins.
       (b) (Fireworks) A small coil which revolves on a common
           pin and makes a wheel of yellow or colored fire.
           [1913 Webster]
    
from The Free On-line Dictionary of Computing (8 July 2008)
Personal Identification Number
PIN

   <security> (PIN, "PIN number") A {password}, typically four
   digits entered through a telephone keypad or automatic teller
   machine.

   (1996-11-03)
    
from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)
PIN
       Personal Identification Number (banking, ICC)
       
    
from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)
PIN
       Personal Internet Name (RFC 3042)
       
    
from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)
PIN
       Processor Independent Netware (Novell, HP, DEC, Apple, Sun)
       
    
from Bouvier's Law Dictionary, Revised 6th Ed (1856)
PINT. A liquid measure containing half a quart or the eighth part of a 
gallon. 
    
from Moby Thesaurus II by Grady Ward, 1.0
241 Moby Thesaurus words for "pin":
      a continental, a curse, a damn, a darn, a hoot, ankle, anklet,
      arbor, armlet, armory, articulate, axis, axle, axle bar,
      axle shaft, axle spindle, axle-tree, badge, badge of office,
      badges, bagatelle, bangle, baton, batten, batten down, bauble,
      bayonet legs, beads, bean, bibelot, bijou, bit, blazonry, bolt,
      bowlegs, bracelet, brass farthing, brassard, breastpin, broach,
      brooch, buckle, bung, butt, button, calf, cap and gown, cent,
      chain, chain of office, chaplet, charm, chatelaine, check valve,
      circle, clasp, class ring, cleat, clip, cnemis, cock, cockade,
      collar, cork, coronet, cross, crown, curio, decoration, diadem,
      distaff, dovetail, dress, drumstick, eagle, earring, emblems,
      ensigns, farce, farthing, fasces, faucet, feather, fig, figurehead,
      fleabite, fleur-de-lis, fob, folderol, foreleg, fribble, frippery,
      fulcrum, gamb, gambrel, gaud, gem, gewgaw, gigot, gimbal, gimcrack,
      gudgeon, hair, halfpenny, ham, hammer and sickle, hasp, heraldry,
      hill of beans, hind leg, hinge, hingle, hitch, hock, hook, hub,
      insignia, jam, jamb, jest, jewel, joint, joke, kickshaw, knee,
      knickknack, knickknackery, lapel pin, latch, leg, lid, limb,
      livery, lock, locket, mace, mandrel, mantle, markings, medal,
      minikin, miter, mockery, molehill, mortarboard, mortise, nail,
      nave, necklace, nose ring, oarlock, old school tie, peg,
      peppercorn, picayune, pinch of snuff, pinprick, pintle, pivot,
      plug, podite, pole, popliteal space, precious stone, rabbet,
      radiant, rap, red cent, regalia, rhinestone, ring, rivet, rose,
      row of pins, rowlock, rush, scarf, school ring, scissor-legs,
      screw, sea cock, sew, shamrock, shank, shin, shit, sigillography,
      skewer, skull and crossbones, snap, sneeshing, sou, sphragistics,
      spigot, spike, spile, spill, spindle, staff, staple, stems, stick,
      stickpin, stitch, stone, stop, stopgap, stopper, stopple, straw,
      stumps, swastika, swivel, tack, tap, tarsus, tartan, thistle,
      tiara, tie, toggle, torque, toy, trifle, trinket, triviality,
      trotters, trunnion, tuppence, two cents, twopence, uniform, valve,
      verge, wampum, wand, wedge, whim-wham, wristband, wristlet,
      zipper

    

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