扣件,鈕扣,結紮工
Fastener \Fas"ten*er\, n. One who, or that which, makes fast or firm.
fastener n 1: a person who fastens or makes fast; "he found the door fastened and wondered who the fastener was" 2: restraint that attaches to something or holds something in place [syn: {fastening}, {holdfast}, {fixing}]