subs. (popular).—1.  A fool. For synonyms, see BUFFLE and CABBAGE-HEAD.

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  1598.  SHAKESPEARE, 1 Henry IV., i. 4. O’horseback, ye CUCKOO; but afoot he will not budge a foot.

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  2.  (old).—A cuckold.

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  1594.  SHAKESPEARE, Love’s Labour’s Lost, Act v., Scene 2.

        CUCKOO, CUCKOO, O word of fear,
Unpleasing to a married ear!

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  3.  (schoolboys’).—The penis. For synonyms, see CREAMSTICK and PRICK.

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