NOSH Meaning of NOSH in English v. & n. sl. --v.tr. & intr. 1. eat or drink. 2 US eat between meals. --n. 1. food or drink. 2 US a snack. Phrases and idioms: nosh-up Brit. a large meal. Etymology: Yiddish Oxford English vocab. Оксфордский английский словарь. 2012