Possibly from a Vulgar Latin *botonus or *bottonem. Compare Italian bottone, French bouton, Spanish botón, Romansch buttun, Sardinian butòne. <span class="searchmatch">botaun</span> m button...
扣子 (zh) (kòuzi) Crimean Tatar: dögme, sadef Czech: knoflík (cs) m Dalmatian: <span class="searchmatch">botaun</span> m Danish: knap c Dutch: knoop (nl) m Esperanto: butono Estonian: nööp (et)...