Large amount to have in a gambling game (5)
I believe the answer is:
lotto
'have in a gambling game' is the definition.
'lotto' can be an answer for 'game' (the UK National Lottery). I also know that 'gambling' relates to this answer.
'large amount to' is the wordplay.
'large amount' becomes 'lot' (a lot of something).
'lot'+'to'='LOTTO'
Can you help me to learn more?
(Other definitions for lotto that I've seen before include "Bingo-like game" , "Game like bingo" , "Game of chance based on numbered balls being drawn at random" , "gamble" , "National game with large money prizes" .)