noun
a portion of food that returns from the first stomach of ruminants to the mouth to be chewed again
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Cows have multiple stomachs to help them digest their food, allowing them to chew their cud.
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I heard that cows chew their cud to help with digestion.
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Hey, did you know that cows regurgitate their cud and chew it again?
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She kept mulling over the problem in her mind, like a cow chewing its cud.