A. A projecting object, a column, pillar, post (very freq.), Vitr. 4, 1, 1 sq.; 3, 3; Varr. R. R. 3, 5, 11: “columnae et templa et porticus sustinent, tamen habent non plus utilitatis quam dignitatis,” Cic. de Or. 3, 46, 180; Cic. Verr. 2, 1, 51, §§ 133 and 134; Quint. 5, 13, 40: “columnae Doricae, Ionicae, Tuscanicae, Corinthiae, Atticae,” Plin. 36, 22, 56, § 178 sq.; Vitr. 4, 1, 1 sqq.: Rostrata, a column ornamented with beaks of ships, erected in honor of Duellius, the conqueror of the Carthaginians, Quint. 1, 7, 12 Spald.; fragments of the inscription on it are yet extant, v. in the Appendix: Maenia, also absol. Columna, a pillory in the Forum Romanum, where thieves, criminal slaves, and debtors were judged and punished, Cic. Div. in Caecil. 16, 50 Ascon.—Absol.: ad columnam pervenire. Cic. Clu. 13, 39: “adhaerescere ad columnam,” id. Sest. 8, 18; cf. Dict. of Antiq. s. v. columna.—Plur.: “columnae, as the sign of a bookseller's shop,” Hor. A. P 373 Orell. ad loc.—From the use of pillars to designate boundaries of countries: “Columnae Protei = fines Aegypti,” Verg. A. 11, 262; and: “Columnae Herculis, i. e. Calpe et Abyla,” Mel. 1, 5, 3; 2, 6, 8; Plin. 3, prooem. § 4; Tac. G. 34.—Prov.: “incurrere amentem in columnas,” Cic. Or. 67, 224.—*
2. Trop., a pillar, support; of Augustus, Hor. C. 1, 35, 14.—
3. Transf., of objects resembling a pillar; so,
a. Of the arm (comice): “ecce autem aedificat: columnam mento suffigit suo,” Plaut. Mil. 2, 2, 54. —
c. Of fire, a meteor, Sen. Q. N. 7, 20, 2; cf. “of the pillar of cloud and of fire which guided the Exodus,” Vulg. Exod. 13, 21 sq.—
e. Narium recta pars eo quod aequaliter sit in longitudine et rotunditate porrecta, columna vocatur, Isid. Orig. 11, 1, 48.—*
B. The top, summit; so only once of the dome of heaven, Cic. poët. Div. 1, 12, 21; cf. columen.