"Clinker" Natural Recordings by Native Speakers
A clinker is a large, hard, black lump of coal that has been partially reduced to ash during the process of burning or incomplete combustion.
Clinocephalism is a rare neurological disorder characterized by a gradual, usually mild, developmental impairment of the brain, particularly affecting the motor skills, coordination, and cognitive abilities. It is often accompanied by dystonia, which is an abnormal muscle tone that can cause involuntary muscle spasms.