A press stud is a two-part fastener pressed together to close. Fit a press stud.
It opens under strain, which is a feature on a baby's clothes and a fault elsewhere. A press stud is called a snap in America and a popper by almost everybody in practice.
1nounpress studA two-part fastener pressed together to close.
“One press stud had pulled clean through the fabric.”
press stud is a fastener.
Practised in Knitting & Sewing