Lewis Short
(adjective) : bīmus, a, um, prob. contracted from bis-hiems, of two winters; cf. Eutych. ap. Cassiod. p. 2311 P., and Aufrecht, Zeitschrift für vergl. Sprachf. 4, p. 415
* Two years old, of two years, continuing two years: nuces,Cato, R. R. 17, 2; Varr. R. R. 2, 1, 13: una veterana legio, altera bima, octo tironum, Planc. ap. Cic. Fam. 10, 24, 3; so, semen,Plin. 18, 24, 54, § 195: surculi,id. 17, 14, 24, § 105: plantae,biennial,Pall. Febr. 25, 2: merum, * Hor. C. 1, 19, 15: nix,Ov. Tr. 3, 10, 16: pensio,Mart. 12, 32, 3: honor,Ov. P. 4, 9, 64: aestimatio ususfructus,Dig. 33, 2, 6: si legatum sit relictum annua, bima, trima die, etc., i. e. solvendum intra annum, biennium, triennium, etc.,ib. 33, 1, 3; cf. dies.—*
* In epist. style, as an abbreviated expression: bima sententia,the vote concerning the continuance of a provincial government for two years,Cic. Fam. 3, 8, 9.
Charlton T. Lewis, Charles Short, A Latin Dictionary