Source : Webster's Revised Unabridged Dictionary (1913)

Limber \Lim"ber\, v. t. [imp. & p. p. {Limbered} (-b[~e]rd); p.
   pr. & vb. n. {Limbering}.] (Mil.)
   To attach to the limber; as, to limber a gun.

   {To limber up}, to change a gun carriage into a four-wheeled
      vehicle by attaching the limber.

Limber \Lim"ber\, a. [Akin to limp, a. [root]125. See {Limp},
   a.]
   Easily bent; flexible; pliant; yielding. --Milton.

         The bargeman that doth row with long and limber oar.
                                                  --Turbervile.

Limber \Lim"ber\, v. t.
   To cause to become limber; to make flexible or pliant.
   --Richardson.

Limber \Lim"ber\ (l[i^]m"b[~e]r), n. [For limmer, Icel. limar
   branches, boughs, pl. of lim; akin to E. limb. See {Limb} a
   branch.]
   1. pl. The shafts or thills of a wagon or carriage. [Prov.
      Eng.]

   2. (Mil.) The detachable fore part of a gun carriage,
      consisting of two wheels, an axle, and a shaft to which
      the horses are attached. On top is an ammunition box upon
      which the cannoneers sit.

   3. pl. (Naut.) Gutters or conduits on each side of the
      keelson to afford a passage for water to the pump well.

   {Limber boards} (Naut.), short pieces of plank forming part
      of the lining of a ship's floor immediately above the
      timbers, so as to prevent the limbers from becoming
      clogged.

   {Limber box or chest} (Mil.), a box on the limber for
      carrying ammunition.

   {Limber rope}, {Limber chain}, or {Limber clearer} (Naut.), a
      rope or chain passing through the limbers of a ship, by
      which they may be cleared of dirt that chokes them.
      --Totten.

   {Limber strake} (Shipbuilding), the first course of inside
      planking next the keelson.

Source : WordNet®

limber
     v 1: attach the limber; "limber a cannon" [syn: {limber up}]
     2: cause to become limber; "The violist limbered her wrists
        before the concert"

limber
     adj 1: (used of e.g. personality traits) readily adaptable; "a
            supple mind"; "a limber imagination" [syn: {supple}]
     2: (used of persons' bodies) capable of moving or bending
        freely [syn: {supple}]
     n : a two-wheeled horse-drawn vehicle used to pull a field gun
         or caisson