The Collaborative International Dictionary of English v.0.48:
Pederast \Ped"er*ast\, n. [Gr. paiderasth`s; pai^s, paido`s, a boy + 'era^n to love: cf. F. p['e]d['e]raste.] One guilty of pederasty; a sodomite. [1913 Webster]WordNet (r) 3.0 (2006):
pederast n 1: a man who has sex (usually sodomy) with a boy as the passive partner [syn: pederast, paederast, child molester]