THIRTY-EIGHT Meaning of THIRTY-EIGHT in English [thir.ty-eight] n (ca. 1934) 1: eight more than thirty 2: a handgun nominally of .38 caliber--usu. written .38 -- thirty-eight adj -- thirty-eight pron, pl in constr Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012