Adjective
Consisting of an oat straw or stem; as, an oaten pipe.
Made of oatmeal; as, oaten cakes.
Source: Webster's dictionaryJoh. Mayor, in the first book of his "History of Scotland," contends much for the wholesomeness of oaten bread; it was objected to him, then living at Paris, that his countrymen fed on oats and base grain.... And yet Wecker out of Galen calls it horse-meat, and fitter juments than men to feed on. Robert Burton
oaten bread Source: Internet
The Archbishop arranged for her to be received in the Benedictine St Sepulchre's Priory in located in the Oaten Hill area off what is now Old Dover Road. Source: Internet