Heart-throb may be lazy, we hear (4)
I believe the answer is:
idol
'heart-throb' is the definition.
The answer and definition can be both people as well as being singular nouns.
Perhaps you can see an association between them that I can't see?
'lazy we hear' is the wordplay.
'lazy' becomes 'idle' (similar in meaning).
'we hear' indicates a 'sounds like' (homophone) clue.
'idle' is a homophone of 'IDOL'.
'may be' acts as a link.
Can you help me to learn more?
(Other definitions for idol that I've seen before include "As before, fake" , "Something worshipped" , "A graven image, or a hero" , "Billy" , "loved one" .)