Definitions

1. noun

a mixture of soap and other substances for cleaning the hair, typically applied with warm water and then rinsed out

“She applied shampoo to her hair and washed it thoroughly.”

2. verb

to clean the hair with a shampoo

“He shampooed his hair every week to keep it clean.”

3. verb

to mix (a surface or material) with a cleaning agent, especially one that foams or lathers

“The builders shampooed the concrete before applying a new coat of paint.”