SCHMO Meaning of SCHMO in English [ ʃməʊ ](also shmo ) ■ noun ( plural ~es ) N. Amer. informal a foolish or inept person. ↘(also Joe Schmo ) a hypothetical ordinary man.Origin1940s: alt. of schmuck . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004