Source : Webster's Revised Unabridged Dictionary (1913)

Fist \Fist\, n. [OE. fist, fust, AS. f?st; akin to D. vuist,
   OHG. f?st, G. faust, and prob. to L. pugnus, Gr. ? fist, ?
   with the fist. Cf. {Pugnacious}, {Pigmy}.]
   1. The hand with the fingers doubled into the palm; the
      closed hand, especially as clinched tightly for the
      purpose of striking a blow.

            Who grasp the earth and heaven with my fist.
                                                  --Herbert.

   2. The talons of a bird of prey. [Obs.]

            More light than culver in the falcon's fist.
                                                  --Spenser.

   3. (print.) the index mark [[hand]], used to direct special
      attention to the passage which follows.

   {Hand over fist} (Naut.), rapidly; hand over hand.

Fist \Fist\, v. t. [imp. & p. p. {Fisted}; p. pr. & vb. n.
   {Fisting}.]
   1. To strike with the fist. --Dryden.

   2. To gripe with the fist. [Obs.] --Shak.

Source : WordNet®

fist
     n : a hand with the fingers clenched in the palm (as for
         hitting) [syn: {clenched fist}]