Flirt cheesed off by The Chair (12)
I believe the answer is:
chesterfield
'the chair' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps there's an association between them I don't understand?
'flirt cheesed off' is the wordplay.
'off' is an anagram indicator.
'flirt'+'cheesed'='flirtcheesed'
'flirtcheesed' anagrammed gives 'CHESTERFIELD'.
'by' acts as a link.
Can you help me to learn more?
(Other definitions for chesterfield that I've seen before include "Midlands town" , "Twisted-spire town; sofa" , "Sofa; overcoat" , "Derby town?" , "somewhere to sit" .)