best man
US /ˌbest ˈmæn/
UK /ˌbest ˈmæn/

1.
伴郎
a male friend or relative who attends the bridegroom at a wedding, and is usually his chief attendant
:
•
My brother asked me to be his best man at his wedding.
我哥哥請我做他婚禮的伴郎。
•
The best man gave a funny speech at the reception.
伴郎在招待會上發表了有趣的演講。