button-down collar

noun
UK /ˈbʌtən daʊn ˈkɒlə/
US /ˈbʌtən daʊn ˈkɑːlər/

A button-down collar is a shirt collar with small buttons that hold the collar points down.

He wore a blue shirt with a button-down collar to the party.


OTHER MEANINGS

2. A style of shirt that has a button-down collar.

She bought a crisp button-down collar for the interview.

3. A collar fastened with buttons as opposed to a plain pointed collar.

The uniform requires a button-down collar, not a spread collar.

4. Informal term for a conservative, businesslike style of dress.

His button-down collar look made him seem very formal.