Source : Webster's Revised Unabridged Dictionary (1913)

Limb \Limb\, v. t.
   1. To supply with limbs. [R.] --Milton.

   2. To dismember; to tear off the limbs of.

Limb \Limb\, n. [L. limbus border. Cf. {Limbo}, {Limbus}.]
   A border or edge, in certain special uses.
   (a) (Bot.) The border or upper spreading part of a
       monopetalous corolla, or of a petal, or sepal; blade.
   (b) (Astron.) The border or edge of the disk of a heavenly
       body, especially of the sun and moon.
   (c) The graduated margin of an arc or circle, in an
       instrument for measuring angles.

Limb \Limb\ (l[i^]m), n. [OE. lim, AS. lim; akin to Icel. limr
   limb, lim branch of a tree, Sw. & Dan. lem limb; cf. also AS.
   li[eth], OHG. lid, gilid, G. glied, Goth. li[thorn]us. Cf.
   {Lith}, {Limber}.]
   1. A part of a tree which extends from the trunk and
      separates into branches and twigs; a large branch.

   2. An arm or a leg of a human being; a leg, arm, or wing of
      an animal.

            A second Hector for his grim aspect, And large
            proportion of his strong-knit limbs.  --Shak.

   3. A thing or person regarded as a part or member of, or
      attachment to, something else. --Shak.

            That little limb of the devil has cheated the
            gallows.                              --Sir W.
                                                  Scott.

   4. An elementary piece of the mechanism of a lock.

   {Limb of the law}, a lawyer or an officer of the law.
      [Colloq.] --Landor.

Source : WordNet®

limb
     n 1: one of the jointed appendages of an animal used for
          locomotion or grasping: arm; leg; wing; flipper
     2: any of the main branches arising from the trunk or a bough
        of a tree [syn: {tree branch}]
     3: (astronomy) the circumferential edge of the apparent disc of
        the sun or the moon or a planet
     4: either of the two halves of a bow from handle to tip; "the
        upper limb of the bow"
     5: the graduated arc that is attached to an instrument for
        measuring angles; "the limb of the sextant"
     6: any projection that is thought to resemble an arm; "the arm
        of the record player"; "an arm of the sea"; "a branch of
        the sewer" [syn: {arm}, {branch}]