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Added 10 October 2026

tuff

/tʌf/ noun

Latin root: tōfus Wiktionary

noun Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about tuff at Wordnik → Where our words come from →

Hard volcanic rock composed of compacted volcanic ash.

Origin

From French tuffe, tuf, from Italian tufo, from Latin tōfus. Doublet of tufa.

From Wiktionary, via Kaikki.org (CC BY-SA)

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