Pronunciation: (un"dur-tā'king, un'dur-tā"- for 1–3; un'dur-tā"king for 4), [key]
1. the act of a person who undertakes any task or responsibility.
2. a task, enterprise, etc., undertaken.
3. a promise; pledge; guarantee.
4. the business of an undertaker or funeral director.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.