A popular figure from the lido (4)
I believe the answer is:
idol
'a popular figure' is the definition.
(I've seen this in another clue)
'from the lido' is the wordplay.
'from' indicates anagramming the letters (from the letters).
'lido' is an anagram of 'IDOL'.
(Other definitions for idol that I've seen before include "A graven image or object of adoration" , "Sacred image" , "One much admired" , "'Worshipped object, admired person (4)'" , "Worshipped figure (not painting); revered person" .)