Obs. Also ko, koo, keo, coo. [ME. midland form, answering to northern ka, kae = Da. kaa, ON. *ká, *kǭ, from *káha: cf. CHOUGH.] Jackdaw. Cf. CADDOW1.
c. 1325. Gloss. W. de Bibbesw., 145. La chouwe, a co-brid [Camb. MS. the co].
c. 1440. Promp. Parv., 84. Coo byrde, or schowhe, Monedula. Ibid., 280. Koo bryd, or schowghe.
14[?]. Voc. Harl. MS. 1587 Ibid. 84. Monedula, coo.
a. 1528. Skelton, P. Sparowe, 466. We may not well forgo The countrynge of the coe.
1530. Palsgr., 237/1. Koo, a byrde.