Source : Webster's Revised Unabridged Dictionary (1913)

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.

Source : WordNet®

pederast
     n : a man who has sex (usually sodomy) with a boy as the passive
         partner [syn: {paederast}, {child molester}]