grubstake Syllabification: (grub·stake)Pronunciation: /ˈgrəbˌstāk/ North American informalDefinition of grubstake noun an amount of material, provisions, or money supplied to an enterprise (originally a prospector for ore) in return for a share in the resulting profits. verb [with object] provide with a grubstake. grubstake in other Oxford dictionaries Definition of grubstake in the British & World English dictionary