Other forms: cufflinks
A cufflink is a small fastener holding a shirt cuff closed. A pair of cufflinks, silver cufflinks, wear cufflinks.
They are needed only on double cuffs, which have no buttons and fold back on themselves. They became common when shirts stiffened with starch in the nineteenth century and buttons would not do the job. Note the compound of cuff and link.
1nouncufflinkA small fastener holding a shirt cuff closed.
“He lost a gold cufflink at the wedding and searched the dance floor for it.”
cufflink is a fastener.
From cuff + link.
Etymology from Wiktionary, CC BY-SA