CUD, noun [See Chew and Jaw.] 1. The food which ruminating animals chew at leisure, when not grazing or eating; or that portion of it which is brought from the first stomach and chewed at once. 2. A portion of tobacco held in the mouth and chewed. 3. The inside of the mouth or throat of a beast that chews the cud
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI