Source : Webster's Revised Unabridged Dictionary (1913)

Leveret \Lev"er*et\ (l[e^]v"[~e]r*[e^]t), n. [F. levraut, dim.
   of li[`e]vre hare, L. lepus. Cf. {Leporine}.] (Zo["o]l.)
   A hare in the first year of its age.

Source : WordNet®

leveret
     n : a young hare especially one in its first year