Obs. [app. an error, or imaginary form invented as an etymological link.]
1695. Kennett, Par. Antiq., Gloss. s.v. Cock-boat, Which word [cog] is still preservd upon the Sea coasts in Yorkshire, where they call a small fisher-boat a Coggle, and in some places by corruption a Cobble.
(Hence 1775. Ash, Coggle, a kind of boat, a cock-boat.
184778. in Halliwell; and in mod. Dicts.)