groats noun pease, possibly pease meal 20. etymology: possibly a development from English groats ‘Hulled, or hulled and crushed grain of various kinds, chiefly oats, but also wheat, barley, and maize’; attested by BS in TDITA collected by EMcC/PS note:

OED cites a Scots phrase to give groats for pease ‘to pay someone back in their own coin’ so there is a correlation between the two.

Canadian Paul Pope (2013) cites this form with the same meaning.