boil (something) away

boil (something) away

To boil a liquid for so long that it evaporates. If you don't put the pasta in the pot soon, you will boil all of the water away.See also: away, boil

boil something away

 1. Lit. to boil a liquid until it is gone altogether. She left the kettle on and boiled the water away. Boil away some of that water. 2. Lit. to remove a volatile chemical from a solution by boiling. Boil the alcohol away or the sauce will be ruined. You should boil away some of the liquid.See also: away, boil