1. a hat with a brim turned up on three sides
Usage: historical

1. having three corners or points

Examples

• The colonial soldier wore a black tricorn hat.
• Pirates in movies are often depicted wearing tricorn hats.
• The museum displayed an authentic 18th-century tricorn.
• The tricorn shape was popular in military uniforms of the era.
• She bought a tricorn hat for her Revolutionary War costume.
• The tricorn design became a symbol of the colonial period.