grease-gun

n device for forcing grease into the parts of an engine, a machine, etc 注油枪（将润滑油注入发动机等的部件之用具）.

gravely, graven, graven image, gravestone, graveyard, graving dock, gravitate, gravitation, gravitational, gravity, gravy, gravy train, gravy-boat, gray, grayscale, graze, grazier, grazing, grazing land, grease, grease-paint, grease-proof paper, greasily, greasiness, greasy, great, Great Britain, great circle, greatcoat, greater, Greater London, greatly, greatness, greaves, grebe, Grecian, Greece, greed, greedily, greediness,