truff

The English word “truff” has 3 meanings listed here.

noun

A truffle.
The sea trout (a fish of the species Salmo trutta morpha trutta, closely related to salmon).
A long stone that goes through the full thickness of a stone wall.

Borrowed from French truffe (“truffle”).

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Definitions are from Wiktionary, extracted by Kaikki.org, and are available under the CC BY-SA 4.0 licence.