fastening
noun /ˈfɑːsnɪŋ/
/ˈfæsnɪŋ/
- (also fastener)a device, such as a button or a zip, used to close a piece of clothing; a device used to close a window, bag, etc. tightly
- the place where something, especially a piece of clothing, fastens; the way something fastens
- The trousers have a fly fastening.