Pronunciation: (en-shoor', -shûr'), [key]
—v.t., -sured, -sur•ing.
1. to secure or guarantee: This letter will ensure you a hearing.
2. to make sure or certain: measures to ensure the success of an undertaking.
3. to make secure or safe, as from harm.
4. insure (defs. 1–3).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.