Also cuth, cuith. The local name in Shetland and Orkney of the Coal-fish, before it is full-grown. (Jamieson.)
1793. Statist. Acc. Orkney, VII. 453 (Jam.). But the fish most generally caught is a grey fish here called cuths, of the size of small haddocks. Ibid. (1795), XVI. 261. These boats sometimes go to sea for the purpose of fishing cod, cooths, and tibrics, which are the small or young cooths.
1841. Yarrell, Brit. Fishes, II. 251.
1844. W. H. Maxwell, Sports & Adv. Scotl., xv. (1855), 137 (Shetland). The Gadus Carbonarius known by the varying term of silloch, cuth, and seath, according to age and size.