JEMMY Meaning of JEMMY in English n. & v. (US jimmi) --n. (pl. -ies or jimmis) a burglar's short crowbar, usu. made in sections. --v.tr. (-ies, -ied) force open with a jemmy. Etymology: pet-form of the name James Oxford English vocab. Оксфордский английский словарь. 2012