boil - noun

a painful sore with a hard core filled with pus

the temperature at which a liquid boils at sea level

boil - verb

• come to the boiling point and change from a liquid to vapor
• immerse or be immersed in a boiling liquid, often for cooking purposes
• bring to, or maintain at, the boiling point
• be agitated
• be in an agitated emotional state

boil - thesaurus

churn   furuncle   moil   roil   seethe