An acid-base indicator which is colorless in acid solution, but turns pink to red as the solution becomes alkaline. It is used medicinally as a cathartic.
Wiper
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A piece generally projecting from a rotating or swinging piece,as an axle or rock shaft, for the purpose of raising stampers,lifting rods, or the like, and leaving them to fall by their ownweight; a kind of cam.
Wiper meaning & definition 1 of Wiper.
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Entry level position in the engine room of a Merchant Ship of the United States.
Duties include maintaining cleanliness of engine room machinery and gangways, bilge detail, and painting/chipping paint in the engineroom.Wiper meaning & definition 2 of Wiper.
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informal for windscreen wiper
Wiper meaning & definition 3 of Wiper.
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