plural of boot-grease

Grease which contains remnants of other materials (e.g. particles of food, metals, chemicals, dirt, etc.).

(idiomatic) Effort or hard work, especially physical work involving repeated motion of the forearm, such as scrubbing.

(idiomatic, slang) A mechanic, often with the specific connotation of an automobile mechanic.

Lanolin.

A narrow pit or trench over which a vehicle can be driven and conveniently worked on from beneath.

Something incredibly fast (now mainly used in comparison: like or faster than greased lightning).

A levered device for forcing grease into machinery. / (colloquial, due to its appearance) A small machine gun, particularly the .45 calibre M3 used by the US in WW2.

plural of grease gun

Any insulating grease that prevents corrosion of electrical connectors (and spark plugs etc) by preventing access by water