Bloke that is limiting expense, essentially (6)
I believe the answer is:
meanie
'bloke that is limiting expense essentially' is the definition.
The answer and definition can be both people as well as being singular nouns.
Maybe you can see a link between them that I don't see?
'bloke that is limiting expense essentially' is the wordplay.
'bloke' becomes 'man' (informal term for a man).
'that is' becomes 'ie' (short for Latin 'id est', 'that is').
'limiting' is an insertion indicator.
'essentially' indicates the central letters.
The middle of 'expense' is 'e'.
'man'+'ie'='manie'
'manie' placed around 'e' is 'MEANIE'.
(Other definitions for meanie that I've seen before include "Unkind person (informal)" , "Selfish type (informal)" , "Stingy person (informal)" , "Nasty piece of work?" , "nasty type" .)