'Stakeholder' definitions:

Definition of 'stakeholder'

noun

Someone entrusted to hold the stakes for two or more persons betting against one another; must deliver the stakes to the winner

From: GCIDE

Stakeholder \Stake"hold`er\ (-h[=o]ld`[~e]r), n. The holder of a stake; one with whom the bets are deposited when a wager is laid. [1913 Webster]