shampooer

shampoo +‎ -er

shampooer (plural shampooers)

1. A machine for shampooing carpets.
   • 1988, Edmund White, chapter 8, in The Beautiful Room is Empty, New York: Vintage International, published 1994:

     I felt like a home appliance one seldom buys but rents when needed, something like a rug shampooer.

2. A person (such as a hairdresser) who washes hair.

• reshampoo