boiling
boil-ing
adjective
Extremely hot; uncomfortably warm, often referring to temperature or weather.
"It's absolutely boiling outside today!"
verb
The present participle of 'to boil'; heating a liquid until it bubbles vigorously.
"The kettle is boiling for tea."
noun
The process or state of a liquid reaching its boiling point.
"Bring the water to a rolling boiling."