Simple past tense and past participle of button.(verb)
With buttons fastened(adjective)
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Use "buttoned" in a sentence
"A bespoke 3. 5m long bench to the left of the entrance makes a statement in buttoned leather with marble inserts (whilst functionally concealing a radiator), made for SHH by Naught One."
"Blouses are designed to look as though they were buttoned from the top, but no button exists near the collar bone."
"As for the amazement that these were built in buttoned down Spain, Catalunya is a very different place from the rest of the country – much more cosmopolitan and ars gratia artis than Madrid, for example."