1. a plume or tuft of feathers, especially from a heron or egret, worn as a decorative ornament on a hat or headdress
Usage: often historical or formal contexts
2. a spray-like ornament of gems or precious metals resembling feathers, worn on a hat or in the hair
Usage: historical, jewelry/fashion

Examples

• The duchess wore an aigret of white ostrich feathers in her hair.
• The 18th-century portrait shows a woman adorned with a diamond aigret.
• The museum's collection includes several aigrets made from heron plumes.
• She pinned a jeweled aigret to her evening gown.
• The fashion of wearing aigrets became popular among European nobility.