The Collaborative International Dictionary
champoo
Shampoo \Sham*poo"\, v. t. [imp. & p. p. Shampooed; p. pr. & vb. n. Shampooing.] [Hind. ch[=a]mpn[=a] to press, to squeeze.] [Writing also champoo.]
To press or knead the whole surface of the body of (a person), and at the same time to stretch the limbs and joints, in connection with the hot bath.
To wash throughly and rub the head of (a person), with the fingers, using either soap, or a soapy preparation, for the more thorough cleansing.
Wiktionary
champoo
n. (dated form of shampoo English) vb. (dated form of shampoo English)