clinkˈer noun

1. Someone who or something that is popular, well-liked or exceedingly good (slang)
2. Something of poor quality, or a mistake or failure (chiefly US)

clinkˈing adjective (slang)

Excellent

clinkˈstone noun

Phonolite (from its metallic clink when struck)

clinker¹ /klingˈkər/

1. The incombustible residue of fused ash raked out of furnaces
2. Furnace slag
3. The cindery crust of some lava flows
4. A hard brick (also klinkˈer)

clinkˈer-block noun

A block for building made from ash from furnaces

clinker² /klingˈkər/

A nail used as a protective stud in footwear, esp in climbing boots

klinker or clinker /klingˈkər/

A very hard paving-brick