fastener
[ˈfɑ:snəɼ]noun ,
fastening
[ˈfɑ:snɪŋ]noun
[generally] attache f
[on box, door] fermeture f
[on bag, necklace] fermoir m
[on clothing] fermeture f
[button] bouton m
[hook] agrafe f
[press stud] pression f, bouton-pression m
[zip] fermeture f Éclair®
what kind of fastener is it? comment cela se ferme-t-il or s'attache-t-il?