The Collaborative International Dictionary
Caddow
Caddow \Cad"dow\, n. [OE. cadawe, prob. fr. ca chough + daw jackdaw; cf. Gael. cadhag, cathag. Cf. Chough, Daw, n.] (Zo["o]l.) A jackdaw. [Prov. Eng.]
Wiktionary
caddow
n. (context UK dialect English) A jackdaw.