Glorify ladies dancing around island before start of evening (8)
I believe the answer is:
idealise
'glorify' is the definition.
('glorify'->'idealize' is in my internal thesaurus and 'ize'->'ise')
'ladies dancing around island before start of evening' is the wordplay.
'dancing' is an anagram indicator.
'around' is an insertion indicator.
'island' becomes 'i' (geographical abbreviation).
'before' is a charade indicator (letters next to each other).
'start of' says to take the initial letters.
The first letter of 'evening' is 'e'.
'ladies' anagrammed gives 'dealis'.
'dealis' enclosing 'i' is 'idealis'.
'idealis'+'e'='IDEALISE'
(Other definitions for idealise that I've seen before include "Consider something or someone perfect" , "Regard as perfect" , "put on pedestal" , "Have unrealistic picture of" , "Think of as perfect" .)