Lewis Short
ănās (noun F) : 3. anus
* Disease of old women: anatem morbum anuum dicebant, id est, vetularum sicut senium morbum senum, Paul. ex Fest, p. 29 Müll.; cf. Placid. p. 435 Mai.
Charlton T. Lewis, Charles Short, A Latin Dictionary
Lewis Short
ănăs (noun F) : (
* Gen. plur. anatum, Cic. N. D. 2, 48, 124; Plin. 25, 2, 3, § 6; rarely anatium,Varr. R. R. 3, 5, 14; 3, 11, 1) [kindr. with old Germ. Anut; Lith. antis; mod. Germ. Ente; perh. also with Sanscr. ātis, a waterfowl], f., the duck: greges anatium,Varr. R. R. 3, 11: anatum ova,Cic. N. D. 2, 48, 124 al.: Anas fluviatilis,wild-duck,Ov. M. 11, 773.
Charlton T. Lewis, Charles Short, A Latin Dictionary