The Collaborative International Dictionary of English v.0.48:
Mezereon \Me*ze"re*on\, n. [F. m['e]z['e]r['e]on, Per. m[=a]zriy[=u]n.] (Bot.) A small European shrub (Daphne Mezereum), whose acrid bark is used in medicine. [1913 Webster]WordNet (r) 3.0 (2006):
mezereon n 1: small European deciduous shrub with fragrant lilac-colored flowers followed by red berries on highly toxic twigs [syn: mezereon, February daphne, Daphne mezereum]