Lewis & Short

orbĭcŭlātus, a, um, adj. [orbiculus], circleshaped, rounded, circular, orbiculate (class.): mala, round apples, an excellent kind of apple, Varr. R. R. 1, 59; Col. 5, 10, 19; 12, 45, 5; Pall. Febr. 25, 18; Macr. S. 3, 19, 2.
Hence, transf.: malis orbiculatis pasti, i. e. well-fed, Cael. ap. Cic. Fam. 8, 15, 1: capita caulium, Plin. 27, 13, 109, § 133: ambitus foliorum, id. 24, 15, 87, § 137.