plain (subs.) Copy link Outline 1. campus2. plānĭties, ēi (a level tract3. aequor, ŏris, n. (level expanse on water or land) • plain (subs.): 1. campus: p.s and mountains, c. et montes, Cic. Div. 1, 42, 94: they live in the expanses of extended p.s, in camporum patentium aequoribus habitant, ib. § 93: very extended p.s, apertissimi c., Caes. B. G. 3, 26. 2. plānĭties, ēi (a level tract: usu. of less extent than campus): between the town and the hill was a p., erat inter oppidum et collem p., Caes. B. C. 1, 43: Sall. 3. aequor, ŏris, n. (level expanse on water or land): cf. supr. (1). Belonging to the p. (as opp. to the hills), campester, tris, tre: villages situated in p.s, vici campestres, Liv. 40, 58: a march through the p., c. iter, Caes. B. C. 1, 66: neut. pl. used as subs.: Tac. G. 43: Plin.