Paladin. wrote on 12/31/69 at 16:00:12:Try Google Images -- first use "grease nipple" and then "grease gun" to see images of nipples and the tool used to force grease thru the nipple into the space you wish to grease -- such as wheel bearings, ball joints, or speedometer housings.
Don't guys have all the fun with terminology? We have male and female named parts for everything, plus greasy nipples, and pet c_ocks. Too many terms to remember.
Don't worry Susan. A grease nipple is just something that guys like to squirt grease into