noun, verb, pledged, pledg⋅ing.| 1. | a solemn promise or agreement to do or refrain from doing something: a pledge of aid; a pledge not to wage war. |
| 2. | something delivered as security for the payment of a debt or fulfillment of a promise, and subject to forfeiture on failure to pay or fulfill the promise. |
| 3. | the state of being given or held as security: to put a thing in pledge. |
| 4. | Law.
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| 5. | something given or regarded as a security. |
| 6. | a person accepted for membership in a club, fraternity, or sorority, but not yet formally approved. |
| 7. | an assurance of support or goodwill conveyed by drinking a person's health; a toast. |
| 8. | Obsolete.
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| 9. | to bind by or as if by a pledge: to pledge hearers to secrecy. |
| 10. | to promise solemnly: to pledge one's support. |
| 11. | to give or deposit as a pledge; pawn. |
| 12. | to stake, as one's honor. |
| 13. | to secure by a pledge; give a pledge for. |
| 14. | to accept as a pledge for club, fraternity, or sorority membership. |
| 15. | to drink a health or toast to. |
| 16. | to make or give a pledge: to pledge for someone. |
| 17. | to drink a pledge; toast someone's health, success, etc. |
| 18. | take the pledge, to make a solemn, formal vow to abstain from intoxicating drink. |
