Wordnet 3.0
NOUN (1)
1.
thin flat unleavened cake of baked oatmeal;
The Collaborative International Dictionary of English v.0.48:
Oatcake \Oat"cake\, n.
A cake made of oatmeal.
[1913 Webster]
WordNet (r) 3.0 (2006):
oatcake
n 1: thin flat unleavened cake of baked oatmeal