(come to the boiling point and change from a liquid to vapor; "Water boils at 100 degrees Celsius")
(immerse or be immersed in a boiling liquid, often for cooking purposes; "boil potatoes"; "boil wool")
(bring to, or maintain at, the boiling point; "boil this liquid until it evaporates")
(be agitated; "the sea was churning in the storm")
(be in an agitated emotional state; "The customer was seething with anger")
(cooked in hot water)