Lewis & Short

pollĭcāris, e, adj. [1. pollex], of or belonging to a thumb (post-Aug.): frutex pollicari crassitudine, of the thickness of a thumb, Plin. 13, 23, 45, § 128: latitudine, id. 15, 24, 26, § 95: amplitudine, id. 27, 9, 49, § 73.