Entice many in with money (5)
I believe the answer is:
lucre
'money' is the definition.
(I know that lucre is a type of money)
'entice many in' is the wordplay.
'entice' becomes 'lure' (synonyms).
'many' becomes 'c' (C is the Roman numeral for 100).
'in' is an insertion indicator.
'lure' going around 'c' is 'LUCRE'.
'with' acts as a link.
(Other definitions for lucre that I've seen before include "(Filthy) profit" , "monetary gain" , "Ulcer (anag)" , "There's money" , "Profit dishonestly obtained" .)