INSELBERG Meaning of INSELBERG in English [ 'ɪns(ə)lbə:g , -z- ]■ noun Geology an isolated hill rising abruptly from a plain.Originearly 20th cent.: from Ger., from Insel 'island' + Berg 'mountain'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004