Boutonniere (noun)

A small flower or floral arrangement that is worn on the lapel of a jacket or coat.

Origin:

Derived from the french word boutonnière, which means buttonhole, it refers to a small flower or floral arrangement that is worn on the lapel of a jacket or coat.

Examples:

1. He wore a red rose boutonniere to match his date's dress.
2. The groom wore a boutonniere of white lilies on his wedding day.
3. The boutonniere was a small but elegant addition to his suit.
4. He carefully pinned the boutonniere to his lapel before leaving for the event.
5. He was given a boutonniere as a gift for his prom.