The Collaborative International Dictionary of English v.0.48:
Leveret \Lev"er*et\ (l[e^]v"[~e]r*[e^]t), n. [F. levraut, dim. of li[`e]vre hare, L. lepus. Cf. Leporine.] (Zool.) A hare in the first year of its age. [1913 Webster]WordNet (r) 3.0 (2006):
leveret n 1: a young hare especially one in its first year