| a fool or simpleton; ninny. |
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
Latin for “Let the buyer beware.” It means that a customer should be cautious and alert to the possibility of being cheated: “Caveat emptor is the first rule of buying a used car.”
caveat emptor
(Latin: "let the buyer beware"), in the law of commercial transactions, principle that the buyer purchases at his own risk in the absence of an express warranty in the contract
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