LAMBASTE Meaning of LAMBASTE in English [ lam'beɪst ](also lambast -'bast ) ■ verb criticize harshly.Derivativeslambasting noun OriginC17 (in the sense 'beat'): from lam 1 + baste 3 . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004