资料来源 : pyDict

钮扣眼上插的花

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Boutonniere \Bou`ton`ni[`e]re"\, n. [F., buttonhole.]
   A bouquet worn in a buttonhole.

资料来源 : WordNet®

boutonniere
     n : a flower that is worn in a buttonhole