I. sham ‧ poo 1 /ʃæmˈpuː/ BrE AmE noun
[ Date: 1700-1800 ; Language: Hindi ; Origin: cãpo , from cãpna 'to press, shampoo' ]
1 . [uncountable and countable] a liquid soap for washing your hair:
What kind of shampoo do you use?
a bottle of shampoo
2 . [countable usually singular] when someone washes your hair using shampoo:
$21 for a shampoo, cut, and blow-dry
shampoo and set (=when someone washes your hair and then dries it so that it has a particular style, especially using ↑ curler s )
3 . [uncountable and countable] a liquid used for cleaning ↑ carpet s
II. shampoo 2 BrE AmE verb [transitive]
to wash something with shampoo:
She showered and shampooed her short dark hair.