Stake, wager (3)
I believe the answer is:
bet
I believe this is a double definition.
'stake' is the first definition.
(synonyms)
'wager' is the second definition.
(synonyms)
(Other definitions for bet that I've seen before include "Wager, gamble" , "Wager, or the sum waged" , "Speculation" , "Money risked on a gamble" , "Wager, back" .)