Lewis & Short

1. agna, ae (abl. plur. agnabus, Hier. Retr. 2, 55, 1), f. [agnus], a ewe lamb, Varr. R. R. 2, 2, 2; Vulg. Gen. 21, 28: humilis, Hor. C. 2, 17, 32: pulla, id. S. 1, 8, 27: muta, id. ib. 2, 3, 19: nitida, id. ib. 2, 3, 214: novella, Ov. P. 1, 118: pavens, id. M. 6, 527: tenera, Stat. Th. 8, 576.

2. agna, ae, f., a blade, a straw, Fest. s. v. pennatus, p. 211 Müull. [kindr. with 2. acus, q. v.; cf. Aufrecht in Zeitschr. für vergl. Sprachf. 1, p. 354].