pledge

noun

1.
a deposit of personal property as security for a debt
borrow
Derived from:
pledge
2.
someone accepted for membership but not yet fully admitted to the group
3.
a drink in honor of or to the health of a person or event
drink hail hobnob toast
Derived from:
pledge
4.
a binding commitment to do or give or refrain from something
behote wed assurance
Derived from:
pledge