LECH Meaning of LECH in English v. & n. colloq. --v.intr. feel lecherous; behave lustfully. --n. 1. a strong desire, esp. sexual. 2 a lecher. Etymology: back-form. f. LECHER: (n.) perh. f. letch longing Oxford English vocab. Оксфордский английский словарь. 2012