Verb
1. come to the boiling point and change from a liquid to vapor;
"Water boils at 100 degrees Celsius"2. cook in boiling liquid;
"boil potatoes"3. bring to, or maintain at, the boiling point;
"boil this liquid until it evaporates"4. be agitated;
"the sea was churning in the storm"5. be in an agitated emotional state;
"The customer was seething with anger"