Ball bearings

from The Collaborative International Dictionary of English v.0.48
Ball \Ball\ (b[add]l), n. [OE. bal, balle; akin to OHG. balla,
   palla, G. ball, Icel. b["o]llr, ball; cf. F. balle. Cf. 1st
   {Bale}, n., {Pallmall}.]
   1. Any round or roundish body or mass; a sphere or globe; as,
      a ball of twine; a ball of snow.
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   2. A spherical body of any substance or size used to play
      with, as by throwing, knocking, kicking, etc.
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   3. A general name for games in which a ball is thrown,
      kicked, or knocked. See {Baseball}, and {Football}.
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   4. Any solid spherical, cylindrical, or conical projectile of
      lead or iron, to be discharged from a firearm; as, a
      cannon ball; a rifle ball; -- often used collectively; as,
      powder and ball. Spherical balls for the smaller firearms
      are commonly called {bullets}.
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   5. (Pyrotechnics & Mil.) A flaming, roundish body shot into
      the air; a case filled with combustibles intended to burst
      and give light or set fire, or to produce smoke or stench;
      as, a fire ball; a stink ball.
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   6. (Print.) A leather-covered cushion, fastened to a handle
      called a ballstock; -- formerly used by printers for
      inking the form, but now superseded by the roller.
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   7. A roundish protuberant portion of some part of the body;
      as, the ball of the thumb; the ball of the foot.
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   8. (Far.) A large pill, a form in which medicine is commonly
      given to horses; a bolus. --White.
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   9. The globe or earth. --Pope.
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            Move round the dark terrestrial ball. --Addison.
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   10. (Baseball) A pitched ball, not struck at by the batter,
       which fails to pass over the home plate at a height not
       greater than the batter's shoulder nor less than his knee
       (i.e. it is outside the strike zone). If the pitcher
       pitches four balls before three strikes are called, the
       batter advances to first base, and the action of pitching
       four balls is called a walk.
       [Webster 1913 Suppl. +PJC]

   10. a testicle; usually used in the plural. [vulgar]
       [PJC]

   11. pl. courage; nerve. [vulgar]
       [PJC]

   {Ball and socket joint}, a joint in which a ball moves within
      a socket, so as to admit of motion in every direction
      within certain limits.

   {Ball bearings}, a mechanical device for lessening the
      friction of axle bearings by means of small loose metal
      balls.

   {Ball cartridge}, a cartridge containing a ball, as
      distinguished from a blank cartridge, containing only
      powder.

   {Ball cock}, a faucet or valve which is opened or closed by
      the fall or rise of a ball floating in water at the end of
      a lever.

   {Ball gudgeon}, a pivot of a spherical form, which permits
      lateral deflection of the arbor or shaft, while retaining
      the pivot in its socket. --Knight.

   {Ball lever}, the lever used in a ball cock.

   {Ball of the eye}, the eye itself, as distinguished from its
      lids and socket; -- formerly, the pupil of the eye.

   {Ball valve} (Mach.), a contrivance by which a ball, placed
      in a circular cup with a hole in its bottom, operates as a
      valve.

   {Ball vein} (Mining), a sort of iron ore, found in loose
      masses of a globular form, containing sparkling particles.
      

   {Three balls}, or {Three golden balls}, a pawnbroker's sign
      or shop.

   {on the ball} alert; competent and knowledgeable.

   {to carry the ball} to carry on the task; to assume the
      responsibility.

   {to drop the ball} to fail to perform as expected; to fail to
      live up to a responsibility.
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   Syn: See {Globe}.
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from The Collaborative International Dictionary of English v.0.48
Bearing \Bear"ing\ (b[^a]r"[i^]ng), n.
   1. The manner in which one bears or conducts one's self;
      mien; behavior; carriage.
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            I know him by his bearing.            --Shak.
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   2. Patient endurance; suffering without complaint.
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   3. The situation of one object, with respect to another, such
      situation being supposed to have a connection with the
      object, or influence upon it, or to be influenced by it;
      hence, relation; connection.
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            But of this frame, the bearings and the ties,
            The strong connections, nice dependencies. --Pope.
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   4. Purport; meaning; intended significance; aspect.
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   5. The act, power, or time of producing or giving birth; as,
      a tree in full bearing; a tree past bearing.
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            [His mother] in travail of his bearing. --R. of
                                                  Gloucester.
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   6. (Arch.)
      (a) That part of any member of a building which rests upon
          its supports; as, a lintel or beam may have four
          inches of bearing upon the wall.
      (b) The portion of a support on which anything rests.
      (c) Improperly, the unsupported span; as, the beam has
          twenty feet of bearing between its supports.
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   7. (Mach.)
      (a) The part of an axle or shaft in contact with its
          support, collar, or boxing; the journal.
      (b) The part of the support on which a journal rests and
          rotates.
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   8. (Her.) Any single emblem or charge in an escutcheon or
      coat of arms -- commonly in the pl.
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            A carriage covered with armorial bearings.
                                                  --Thackeray.
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   9. (Naut.)
      (a) The situation of a distant object, with regard to a
          ship's position, as on the bow, on the lee quarter,
          etc.; the direction or point of the compass in which
          an object is seen; as, the bearing of the cape was W.
          N. W.
      (b) pl. The widest part of a vessel below the plank-sheer.
      (c) pl. The line of flotation of a vessel when properly
          trimmed with cargo or ballast.
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   {Ball bearings}. See under {Ball}.

   {To bring one to his bearings}, to bring one to his senses.
      

   {To lose one's bearings}, to become bewildered.

   {To take bearings}, to ascertain by the compass the position
      of an object; to ascertain the relation of one object or
      place to another; to ascertain one's position by reference
      to landmarks or to the compass; hence (Fig.), to ascertain
      the condition of things when one is in trouble or
      perplexity.
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   Syn: Deportment; gesture; mien; behavior; manner; carriage;
        demeanor; port; conduct; direction; relation; tendency;
        influence.
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