As used for one's Barnet? (3)
I believe the answer is:
net
'as' is the definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.
'for one's barnet?' is the wordplay.
'NET' is hidden in amongst the letters.
However, I am unsure how the hidden word is indicated.
'used' acts as a link.
Can you help me to learn more?
(Other definitions for net that I've seen before include "Catch, ensnare" , "Open mesh; catch" , "Open weave fabric" , "Butterfly trap" , "Amount remaining after deductions" .)