- a brittle unleavened oatmeal biscuit
WordReference Random House Unabridged Dictionary of American English © 2026
oat•cake
(ōt′kāk′),USA pronunciation n.
- a cake, usually thin and brittle, made of oatmeal.
- oat + cake 1590–1600
Collins Concise English Dictionary © HarperCollins Publishers::
oatcake /ˈəʊtˌkeɪk/ n