0 used to describe a piece of clothing that fastens with a row of buttons up the front: --
1 a shirt or jacket that fastens with a row of buttons up the front: --
When buying a suit, it doesn't matter whether you pick a classic button-up, blazer, zip up or frockcoat, just stick to a style that suits you.
He enters the bar in baggy jeans, flat shoes, and a form-fitting vintage button-up.
The old button-up knitwear so beloved of Val Doonican and Perry Como is apparently now the latest word in trendy dressing.
The best thing to wear home is a button-up top and pull on pants.
Feeling a bit hot, he shed his jacket, leaving him in a collared, button-up shirt that was loosely tucked into his belt.