whip purchase

Whip \Whip\, n. [OE. whippe. See {Whip}, v. t.]
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   1. An instrument or driving horses or other animals, or for
      correction, consisting usually of a lash attached to a
      handle, or of a handle and lash so combined as to form a
      flexible rod. "[A] whip's lash." --Chaucer.
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            In his right hand he holds a whip, with which he is
            supposed to drive the horses of the sun. --Addison.
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   2. A coachman; a driver of a carriage; as, a good whip.
      --Beaconsfield.
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   3. (Mach.)
      (a) One of the arms or frames of a windmill, on which the
          sails are spread.
      (b) The length of the arm reckoned from the shaft.
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   4. (Naut.)
      (a) A small tackle with a single rope, used to hoist light
          bodies.
      (b) The long pennant. See {Pennant}
      (a)
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   5. A huntsman who whips in the hounds; whipper-in.
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   6. (Eng. Politics)
      (a) A person (as a member of Parliament) appointed to
          enforce party discipline, and secure the attendance of
          the members of a Parliament party at any important
          session, especially when their votes are needed.
      (b) A call made upon members of a Parliament party to be
          in their places at a given time, as when a vote is to
          be taken.
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   7. A whipping motion; a thrashing about; as, the whip of a
      tense rope or wire which has suddenly parted; also, the
      quality of being whiplike or flexible; flexibility;
      suppleness, as of the shaft of a golf club.
      [Webster 1913 Suppl.]

   8. (Mech.) Any of various pieces that operate with a quick
      vibratory motion, as a spring in certain electrical
      devices for making a circuit, or a rocking certain piano
      actions.
      [Webster 1913 Suppl.]

   {Whip and spur}, with the utmost haste.

   {Whip crane}, or {Whip purchase}, a simple form of crane
      having a small drum from which the load is suspended,
      turned by pulling on a rope wound around larger drum on
      the same axle.

   {Whip gin}. See {Gin block}, under 5th {Gin}.

   {Whip grafting}. See under {Grafting}.

   {Whip hand}, the hand with which the whip is used; hence,
      advantage; mastery; as, to have or get the whip hand of a
      person. --Dryden.

   {Whip ray} (Zool.), the European eagle ray. See under {Ray}.
      

   {Whip roll} (Weaving), a roll or bar, behind the reeds in a
      loom, on which the warp threads rest.

   {Whip scorpion} (Zool.), any one of numerous species of
      arachnids belonging to {Thelyphonus} and allied genera.
      They somewhat resemble true scorpions, but have a long,
      slender bristle, or lashlike organ, at the end of the
      body, instead of a sting.

   {Whip snake} (Zool.), any one of various species of slender
      snakes. Specifically:
      (a) A bright green South American tree snake ({Philodryas
          viridissimus}) having a long and slender body. It is
          not venomous. Called also {emerald whip snake}.
      (b) The coachwhip snake.
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