Definition - A figure of speech where the speaker uses a word in a way that is different from its expected meaning.
Note: Irony and metaphor are types of tropes.

Example -
He has a "special" kind of wisdom [i.e. he is not wise].

Etymology -
The word derives from the Latin tropus, a figure of speech (from the Greek tropein, to turn).

Oxford English Dictionary -
The first citation is from 1533:
"If ye be so sworne to the litteral sense in this matter,
that ye will not in these wordes of Christe,
Thys is my bodye, &c., admitte in so playne a speache anye troope."
(Tindale, Supper of Lord Cv )

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