A line to produce great pleasure (7)
I believe the answer is:
elation
'great pleasure' is the definition.
The definition and answer can be both feelings as well as being singular nouns.
Maybe you can see an association between them that I don't see?
'a line to produce' is the wordplay.
'produce' is an anagram indicator.
'a'+'line'+'to'='alineto'
'alineto' is an anagram of 'ELATION'.
Can you help me to learn more?
(Other definitions for elation that I've seen before include "There's great joy" , "Delight, ecstasy" , "Great happiness and exhilaration" , "Bliss" , "Delight, thrill" .)