button mushroomBrE /ˌbʌtn ˈmʌʃrʊm/ 🔊NAmE /ˌbʌtn ˈmʌʃrʊm/ 🔊BrE /ˌbʌtn ˈmʌʃruːm/ 🔊NAmE /ˌbʌtn ˈmʌʃruːm/ 🔊 nouna small young mushroom used in cooking (食用)小蘑菇