Etymology
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shampoo (v.)
1762, "to massage," from Anglo-Indian shampoo, from Hindi champo, imperative of champna "to press, knead the muscles," perhaps from Sanskrit capayati "pounds, kneads." Meaning "wash the hair" first recorded 1860; extended 1954 to carpets, upholstery, etc. Related: Shampooed; shampooing.
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shampoo (n.)
"soap for shampooing," 1866, from shampoo (v.).
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