spīrācŭlum, i, n. [spiro],
a breathinghole , air - hole , vent , spiracle (poet. and in post-Aug. prose), Lucr. 6, 493; Verg. A. 7, 568; Plin. 2, 93, 95, § 208; Val. Fl. 3, 553; Pall. Jun. 7, 8; id. Oct. 14, 16.—Also breath : vitae, Vulg. Gen. 2, 7; 7, 22.