buttonhole
noun /ˈbʌtnhəʊl/
  /ˈbʌtnhəʊl/
 - enlarge imagea hole on a piece of clothing for a button to be put through纽扣孔;扣眼 - (British English) (North American English boutonnière)a flower that is worn in the buttonhole of a coat or jacket佩戴在扣眼上的花 



