Shampoo (noun)

1. A cosmetic preparation for washing the hair.
2. The act of washing one's hair with shampoo.
3. A thorough cleaning of something.

Origin:

The word 'shampoo' originated in india and is derived from the hindi word 'chāmpo', which means 'to press or massage'. the modern meaning of 'to wash hair' developed in the late 19th century.

Examples:

1. She used a gentle shampoo to cleanse her hair.
2. The hair salon offered a variety of shampoos for different hair types.
3. She gave her dog a shampoo to get rid of the fleas.
4. He gave himself a quick shampoo in the shower.
5. The car needed a good shampoo to get rid of the dirt and grime.