bib
noun [ C ] uk/bɪb/ us/bɪb/
（小孩的）围涎，围嘴，围兜
a cover made of cloth or plastic that is worn by young children when eating to protect their clothes
围兜|围裙|围嘴儿
the part of some styles of clothing, for example an apron, a pinafore, or a pair of dungarees, that covers the chest
UK (US practice pinny, scrimmage vest)（运动员佩戴的）号码布
a piece of clothing like a light shirt with no sleeves that is worn over other clothing, for example in team games to show which team a person is playing for
Idiom
your best bib and tuckeridiom mainly UK old-fashioned 最漂亮的衣服
your best clothes that you wear on special occasions