Noah Webster's New International Dictionary of the English Language

1. (p. pr. & vb. n.) of Undertake.

2. (n.) The act of one who undertakes, or engages in, any project or business.

3. (n.) That which is undertaken; any business, work, or project which a person engages in, or attempts to perform; an enterprise.

4. (n.) Specifically, the business of an undertaker, or the management of funerals.

5. (n.) A promise or pledge; a guarantee.