wiper
nounOne that wipes.
nounSomething, such as a towel, used for wiping.
nounA device designed for wiping, as on an automobile windshield.
nounA projecting cam, as on a rotating shaft, that activates another machine part.
nounA movable electrical contact, as in a rheostat.
nounSame as
A ring in a shaft-bearing, resting by its inner surface on the top of the shaft and hanging with its bottom elements in a bath of oil. As the shaft revolves the ring turns slowly with it, and brings up the oily parts of its surface which are wiped off by the grooves in which the ring is steadied.
nounOne who or that which wipes.
nounThat on which anything is wiped, as a hand-towel or a handkerchief.
nounIn machinery, a piece projecting generally from a horizontal axle, for the purpose of raising stampers, pounders, or pistons in a vertical direction and letting them fall by their own weight. Wipers are employed in fulling-mills, stamping-mills, oil-mills, powder-mills, etc. Also