1. To bring to, or maintain at, the boiling point, as of water and other liquids
2. To come to the boiling point and change from a liquid to vapor
3. To cook in boiling liquid

1. To clear land of its vegetation by burning it off.
2. To use up (energy); SYN. burn, burn up.

To lose or cause to lose liquid by vaporization leaving a more concentrated residue; SYN. vaporize.

Alternate (chiefly British) spelling of vaporize.