antrum (noun N) = ἄντρον:
* A cave, cavern, grotto (almost entirely confined to the poets).
* Lit.: succedere antro,Verg. E. 5, 19: subire antra,Ov. M. 1, 121: occulere se antro,Val. Fl. 8, 315: ingens,Verg. A. 6, 42: gratum,Hor. C. 1, 5, 3: gelida antra,Verg. G. 4, 509: silvestria,Ov. M. 13, 47: Dionaeo sub antro,Hor. C. 2, 1, 39: vos Caesarem Pierio recreatis antro,id. ib. 3, 4, 40: quibus antris audiar?id. ib. 3, 25, 4: harenosum Libyae Jovis antrum,Prop. 5, 1, 103: effossa antra,Mart. 13, 60; Stat. S. 4, 6; Sil. 6, 149 et saep.—In prose mostly in eccl. Lat., Vulg. Gen. 23, 20; ib. Jud. 6, 2; ib. 1 Reg. 13, 6; ib. Job, 37, 8; 38, 40: per antra et cavas rupes,Suet. Tib. 43.
* Fig., of the hollow of a tree: ekesae arboris antrum,Verg. G. 4, 44.—Of a sedan: clausum antrum,Juv. 4, 21.—Later, of any cavity: narium,Sid. Ep. 1, 2: palati,id. ib. 9, 13: pectoris,Prud. Psych. 6, 774.

s. TLL