From The Collaborative International Dictionary of English v.0.48:
Cud \Cud\ (k[u^]d), n. [AS. cudu, cwudu,cwidu,cweodo, of
uncertain origin; cf, G. k["o]der bait, Icel. kvi[eth]r womb,
Goth. qi[thorn]us. Cf. Quid.]
1. That portion of food which is brought up into the mouth by
ruminating animals from their first stomach, to be chewed
a second time.
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Whatsoever parteth the hoof, and is cloven-footed,
and cheweth the cud, among the beasts, that shall ye
eat. --Levit. xi. 3
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2. A portion of tobacco held in the mouth and chewed; a quid.
[Low]
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3. The first stomach of ruminating beasts. --Crabb.
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To chew the cud, to ruminate; to meditate; used with of;
as, to chew the cud of bitter memories.
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Chewed the thrice turned cud of wrath. --Tennyson.
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