† kiddawOrnith.Obs.|ˈkɪdɔː| [Cf. caddow, cadaw.] A Cornish name for the guillemot. 1674Ray Collect. Words 61 In Cornwal they call the guilliam a kiddaw.1678― Willughby's Ornith. 324 The Bird called by the Welsh and Manks-men, a Guillem;..by the Cornish, a Kiddaw.