pledge >> /plɛdʒ/
Definition: [verb] Commit (a person or organization) by a solemn promise.
Example: the government pledged itself to deal with environmental problems
Definition: [verb] Give as security on a loan.
Example: the creditor to whom the land is pledged
Definition: [verb] Drink to the health of.
Definition: [verb] Promise to join (a fraternity or sorority)
Example: Francie and I pledged the same sorority
Definition: [noun] A solemn promise or undertaking.
Example: the conference ended with a joint pledge to limit pollution
Definition: [noun] A thing that is given as security for the fulfillment of a contract or the payment of a debt and is liable to forfeiture in the event of failure.
Example: he had given the object as a pledge to a creditor
Definition: [noun] The drinking to a person's health; a toast.
Definition: [noun] A person who has promised to join a fraternity or sorority.
Example: But Barry himself looks instinctively like a new fraternity pledge who barely made it into the house.