oatcake
US /ˈoʊt.keɪk/
UK /ˈoʊt.keɪk/

1.
a thin, flat biscuit made from oatmeal, typically eaten with cheese or as part of a savory meal
:
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She spread some cheese on an oatcake for a quick snack.
•
Traditional Scottish breakfasts often include oatcakes.