Barnet cleaner? (7)
I believe the answer is:
shampoo
This could be a double definition.
'barnet' is the first definition.
Both the answer and definition are singular nouns.
Maybe you can see an association between them that I don't see?
'cleaner?' is the second definition.
(shampoo cleans hair)
Can you help me to learn more?
(Other definitions for shampoo that I've seen before include "Oh, so Pam uses it on her hair?" , "cleansing operation" , "Bathroom preparation" , "Hair or carpet cleaner" , "hairdressing" .)