Dictionary definition · pledge
noun
- a deposit of personal property as security for a debt"his saxophone was in pledge"
- someone accepted for membership but not yet fully admitted to the group
- a drink in honor of or to the health of a person or event
- a binding commitment to do or give or refrain from something"an assurance of help when needed"
verb
- promise solemnly and formally"I pledge that I will honor my wife"
- pay (an amount of money) as a contribution to a charity or service, especially at regular intervals"I pledged $10 a month to my favorite radio station"
- propose a toast to"Let us toast the birthday girl!"
- give as a guarantee"I pledge my honor"
- bind or secure by a pledge"I was pledged to silence"
Source: Open English WordNet (CC BY 4.0).