GASTROLITH Meaning of GASTROLITH in English [ 'gastrə(ʊ)lɪθ ]■ noun1》 Zoology a small stone swallowed by a bird, reptile, or fish to aid digestion in the gizzard. 2》 Medicine a hard concretion in the stomach. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004