زر

زِرّ \ button: a small round fastener on clothes; a small round object that is pressed to work a bell or light. knob: a round handle for controlling parts of a machine (car, radio, etc.). \ زِرّ (قميص)‏ \ stud: a metal button (of various kinds) for fastening things: a collar stud; a press stud (which fastens when pressed). \ See Also دَبّوس \ زِرّ تَزْيينيّ لِلكُمّ \ cufflink: an ornamental device for fastening a cuff.