GRUBSTAKE
grubstake
(noun) funds advanced to a prospector or to someone starting a business in return for a share of the profits
grubstake
(verb) supply with funds in return for a promised share of profits
Source: WordNet® 3.1
Etymology
Noun
grubstake (plural grubstakes)
(mining) Money, materials, tools, food etc. provided to a prospector in return for a share in future profits.
(business) An amount of money advanced to someone starting a business in return for a share of the future profits.
Money, necessities stockpiled to sustain an effort for a period of time.
Verb
grubstake (third-person singular simple present grubstakes, present participle grubstaking, simple past and past participle grubstaked)
(transitive) To supply such funds to.
Source: Wiktionary