A hand-powered pump always force grease under some pressure into bearings.
A submachine weapon.
a levered unit for pushing grease into equipment.
a little machine gun, specially the .45 calibre M3 used by the usa in WW2.
a computer device presented inside hand, having a supply of grease and mounted on a reservoir of pressurized environment, regularly force grease between adjacent going areas of a device, especially in the bearings of motor vehicles.
a hand-operated pump that resembles a revolver; forces oil into areas of a machine