n.funds advanced to a prospector or to someone starting a business in return for a share of the profitsv.supply with funds in return for a promised share of profits
英汉双解大词典
grubstake/ˈɡrʌbˌsteɪk/
1.
N（名词）
supplies provided for a prospector on the condition that the donor has a stake in any finds (以分享发现物为条件而提供给探矿者的)物质资金援助 [美国英语][非正式]
2.
V（动词）
to furnish with such supplies 提供此类物质资金援助 [美国英语][非正式]