Cud
Bosworth & Toller Anglo-Saxon Old English Dictionary - cud
According to the Old English Dictionary:
cudu, es;
- cud
- n? A CUD, what is chewed; rumen :-- Ðe heora cudu ne ceówaþ: ða clǽnan nýtenu ðe heora cudu ceówaþ which chew not the cud: the clean beasts which chew their cud, M. H. 138b.