Source : Webster's Revised Unabridged Dictionary (1913)

Plucky \Pluck"y\, a. [Compar. {Pluckier}; superl. {Pluckiest}.]
   Having pluck or courage; characterized by pluck; displaying
   pluck; courageous; spirited; as, a plucky race.

         If you're plucky, and not over subject to fright.
                                                  --Barham.

Source : WordNet®

plucky
     adj 1: showing courage; "the champion is faced with a feisty
            challenger" [syn: {feisty}, {spunky}]
     2: showing courage in the face of danger; "a plucky lampooner
        of the administration"
     [also: {pluckiest}, {pluckier}]