căvo, āvi, ātum, 1, v. a. [cavus], to make hollow, to hollow out, excavate (class., but not in Cic.; for in Leg. 2, 18, 45, dicato is the correct reading, B. and K.): stillicidi casus lapidem cavat, Lucr. 1, 313; cf. Ov. M. 4, 525: naves ex arboribus, Liv. 21, 26, 9: arbore lintres, Verg. G. 1, 262: buxum, id. ib. 2, 450: dentes cavantur tabe pituitae, Plin. 7, 16, 15, 70: luna cavans cornua (in waning), id. 8, 17, 23, 63: parmam galeamque gladio, i. e.
to pierce through
,
perforate
, Ov. M. 12, 130: tegmina tuta cavant capitum, hollow out, poet. for round off, bend around, fabricate, Verg. A. 7, 632.—Hence, căvātus, a, um, P. a., hollowed, excavated, hollow: alni, Verg. G. 1, 136: cortices, id. ib. 2, 387: rupes, id. A. 3, 229: anfracta aurium, Varr. ap. Non. p. 193, 3: oculi, Lucr. 6, 1194 (with cava tempora): vallis, Varr. L. L. 5, 20 Müll.: torrens alibi aliter, Liv. 44, 35, 17.—Comp.: sinus cavatior, Tert. adv. Herm. 29.
căvus, a, um, adj. [root ku-, kue/w, to swell, etc.; cf.: koi=los, keno/s], hollow, excavated, concave (opp. plenus, full, round; class.). I. Prop.: cava conveniant plenis, Lucr. 6, 1085: cicutae, id. 5, 1383: tibia, id. 2, 620: concha, Verg. A. 6, 171: aes, id. ib. 3, 240: testudo, id. G. 4, 464; Hor. Epod. 14, 11: bucina, Ov. M. 1, 335 et saep.: ungula, Enn. Ann. 419 Vahl.: fornaces, Lucr. 7, 202: montes, id. 5, 955: specus, Enn. Ann. 420 Vahl.: cavernae, Verg. A. 2, 53: trabs, id. ib. 3, 191 et saep.: trunci, Hor. C. 2, 19, 12: ilex, id. Epod. 16, 47: saxa, id. C. 3, 13, 14 et saep.: vena,
the hollow vein
, Cic. N. D. 2, 55, 138: nubes, Lucr. 6, 127; 6, 176; 6, 272; Verg. A. 1, 516; 5, 810 al.—Hence also of a darkness enveloping one as a cloud: umbra, Verg. A. 2, 360: flumina,
the deepchannelled mountain streams
, id. G. 1, 326; 4, 427; cf. Luc. 1, 396: luna, waning (cf. cavo), Plin. 8, 54, 80, 215.—B.Subst.: căvum, i, n. (access. form căvus, i, m. (sc. locus), Varr. R. R. 3, 15, 1; Hor. S. 2, 6, 116; id. Ep. 1, 7, 33; Phaedr. 4, 6, 3; Col. 12, 8), a hollow, cavity, hole, Cato, R. R. 128; Plaut. Men. 1, 2, 49; Lucr. 5, 1382; Liv. 24, 34, 9; Verg. G. 1, 184; Hor. S. 2, 3, 173; Plin. 2, 79, 81, 192; 11, 51, 112, 266 et saep.: cava caeli, Enn. Trag. 131 Vahl.; cf.: cava caerula, id. ib. 332 Vahl.; hence, căvum aedĭum (contr. căvae-dĭum, Phn. Ep. 2, 17, 5), the inner court of Roman houses (cf. Vitr. 6, 3 Schneid.; O. Müll. Etrusk. 1, p. 255, and Archaeol. 293, III.), Varr. L. L. 5, 161; Vitr. 6, 3; Dict. of Antiq.—II. In late Lat., trop.: menses, which have only 30 days (opp. menses pleni, which have 31 days), Censor. 20.—b. = inanis, vain, empty: gloria, Paul. Nol. Carm. 22, 139: opes, id. ib. 21, 912.