Something that clangs; an alarm bell (also figuratively).

The clapper of a bell, anything that strikes a bell or other metal object to make a ringing sound.

(chiefly UK, Australia, New Zealand, Ireland, informal, often in the phrase drop a clanger) A very noticeable mistake; an attention-getting faux pas.

(Australia, Australian rules football) A mistake made by a player; counted in the game statistics in the category "errors including frees against".

An early hi-hat consisting of cymbals mounted on the rim of a bass drum and struck with an arm on the drum's pedal.

(Australia, entomology) A cicada, Psaltoda claripennis, of New South Wales and Queensland, having an upper body of green and brown and clear wings with green veins.

Short for Bedfordshire clanger.