clink‧er /ˈklɪŋkə $ -ər/ noun
[Sense 1: Date: 1600-1700; Origin: klincard type of brick (1600-1700), from Dutch klinkaard]
[Sense 2-3: Date: 1900-2000; Origin: ⇒ clink¹]

1. [uncountable and countable] the hard material like rocks, which is left after coal has been burnt

2. [countable] American English a bad note in a musical performance:
The singer hit a real clinker.

3. [countable] American English informal something or someone that is a total failure:
Most of the songs are good, but there are a few clinkers.

[TahlilGaran] Dictionary of Contemporary English ▲