metal or wooden object attached to a door decorative design ring or bar-shaped knob a knocker plate or arm attached to the door a knocker spring or latch to keep the knocker in place
knocker which has metal or wooden object attached to a door knocker which has decorative design knocker which has ring or bar-shaped knob knocker which is a knocker plate or arm attached to the door knocker which is a knocker spring or latch to keep the knocker in place