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3. flea in one's ear, a

flea in one's ear, a

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flea in one's ear, a

An annoying hint or a stinging rebuke, as in He has a flea in his ear about their relationship, or If he doesn't bring the right equipment, I'll put a flea in his ear. This expression originated in French and has been used in English since the 1400s.

See also: flea