verb
boils; boiled; boiling
[no obj] :to become so hot that bubbles are formed in a liquid and rise to the top
[+ obj] :to heat (a liquid or a container with liquid in it) so that bubbles are formed and rise to the top
to cook (something) in water that is boiling [+ obj]
[no obj] :to feel a strong emotion (such as anger) - + with
a watched pot never boils
The expression a watched pot never boils means that time passes very slowly when you are waiting for something to happen if that is the only thing you are thinking about.
boil down
[phrasal verb]
to become reduced in amount by boiling
b boil (something) down or boil down (something) :to reduce the amount of (a liquid) by boiling it
boil (something) down or boil down (something) :to make (something) short or simple by removing the parts that are not important or necessary
boil down to (something) :to have (something) as the main or basic part
boil over
[phrasal verb]
to flow over the side of a container while boiling
to become violent or to lose control because of anger
to change into something more violent
boil up
[phrasal verb]
to grow toward a dangerous level
make someone's blood boil
noun
plural boils
[singular] of a liquid :the act or state of boiling
[count] US :a dish of shellfish, vegetables, and spices that is cooked by boiling
off the boil
Brit informal :into a state that is less good than before
on the boil
Brit informal :in a state of activity or development
noun
plural boils
[count] :a painful, swollen area under the skin that is caused by infection - compare 2boil