Testudinal

tes-tū′din-al, adj. relating to, or resembling, the tortoise.— adjs. Testū′dinate , -d , Testudin′eous , arched, vaulted, resembling the carapace of a tortoise.— n. Testū′do , a cover for the protection of Roman soldiers attacking a wall, formed by overlapping their oblong shields above their heads: any similarly shaped shelter for miners, .: an encysted tumour: the fornix: a kind of lyre, the lute. [L. testudo , -in is , the tortoise.]