Cheek? Yes and no (3)
I believe the answer is:
lip
'cheek?' is the definition.
(both can mean insolence or rudeness)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for lip that I've seen before include "Rim; impudence (slang)" , "Rim of an orifice" , "Rim; impertinence" , "Top edge of a vessel" , "Brink" .)