ALLIS SHAD Meaning of ALLIS SHAD in English [ 'alɪs ]■ noun a shad (fish) with a deep blue back and silvery sides. [ Alosa alosa .]OriginC16: allis from OFr. alose , from late L. alausa . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004