Love lines circling front of bald heads (7)
I believe the answer is:
obverse
'heads' is the definition.
(thesaurus)
'love lines circling front of bald' is the wordplay.
'love' becomes 'o' (In tennis, 'love' means 'zero').
'lines' becomes 'verse' (I've seen this before).
'circling' means one lot of letters goes inside another (circling can mean going around or containing).
'front of' indicates taking the first letters.
The first letter of 'bald' is 'b'.
'o'+'verse'='overse'
'overse' going around 'b' is 'OBVERSE'.
(Other definitions for obverse that I've seen before include "Logical proposition" , "Side normally seen" , "Side of coin that shows the principal design" , "Side of a coin that shows heads" , "Side of a coin bearing the head" .)