clanger

/ˈklæŋ.ə(ɹ)/noun
RareNot in standard dictionaries
1

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

2

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

3

A very noticeable mistake; an attention-getting faux pas.

4

A mistake made by a player; counted in the game statistics in the category "errors including frees against".

5

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.

6

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

#informal