intransitive verb
Definition: To reach a temperature where a liquid turns into vapor, often producing bubbles and steam.
Example: The water will boil if you heat it enough.
noun
Definition: A painful swelling on the skin filled with pus, often caused by an infection, or a situation where a liquid is agitated and bubbling.
Example: He had a boil on his arm that needed to be treated by a doctor.
transitive verb
Definition: To heat a liquid until it bubbles and turns into vapor.
Example: I will boil the water before making tea.