cash or money generally. A suggested derivation may be mentioned. Quo = anything, and Quid pro quo means an equivalent generally. If now a person is offered anything on sale he might say, I have not a quid for your quo, an equivalent in cash.
“Then, looking at the gold piece, she added, ‘I guess you donʹt often get one of these quids.ʹ”—LibertyReview, June 9, 1894, p. 437.
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