1. small flowers or decorative arrangements worn on the lapel of a jacket or coat, typically by men at formal events
Usage: plural of boutonniere

Examples

• The groomsmen all wore matching white rose boutonnieres.
• He pinned the boutonniere to his tuxedo lapel before the wedding.
• The florist prepared elegant boutonnieres for the prom attendees.
• Traditional boutonnieres are worn on the left lapel.
• The father of the bride chose a simple carnation boutonniere.
• She helped him attach the boutonniere with a pearl-headed pin.