/kud/ , n.
1. the portion of food that a ruminant returns from the first stomach to the mouth to chew a second time.
2. Dial. quid 1 .
3. chew one's or the cud , Informal. to meditate or ponder; ruminate.
[ bef. 1000; ME; OE cudu, var. of CWIODU, CWIDU; akin to OHG quiti glue, Skt jatu resin, gum. See QUID 1 ]