(aviation) A component of an aircraft wheel held in place by a metal alloy with a low melting point, such that, if the wheel is severely overheated (for instance, by heavy braking), pressure is released from the wheel and tire/tyre in a controlled manner rather than risking an explosion of the wheel assembly.

a device in a diesel engine that heats the combustion chamber to help ignition

A hard, black hat with a narrow brim, such as a bowler or top hat.

(intransitive) to unplug or cut power / (intransitive, idiomatic) to cease to support; to halt / (intransitive) to cease or turn off life support

The large edible endothermal cells surrounded by the blastopore of an amphibian gastrula during its later stages

(electricity) A type of audio connector.

(baseball, slang, 1800s) Synonym of soak the runner

The part of an internal combustion engine which forms a high-voltage electric spark which ignites the fuel-air mixture to begin the power stroke.

(informal) To persist or continue, as with an effort.

(slang, vulgar) A sex toy designed for insertion into the anus and rectum. / (athletics) A rubber cap fitted to the end of the pole in pole vaulting.