Bet someone was burned here (5)
I believe the answer is:
stake
'bet' is the definition.
(staking is a kind of betting)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for stake that I've seen before include "Sum gambled" , "Prize" , "Wager; post" , "stout support" , "Ante, bet" .)