Noun

1. a very visible mistake (with reverberating consequences); an attention-getting faux pas; a jarring error.

   He dropped a real clanger when he criticized the paraplegic for not standing.

2. A mistake made by a player, counted in the game statistics; the official description is "errors including frees against".
3. 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.