(meteorology, uncountable) Balls or pieces of ice falling as precipitation, often in connection with a thunderstorm.

(meteorology, countable) An occurrence of this type of precipitation; a hailstorm.

(countable, by extension) A rapid, intense barrage by a large number of projectiles or other objects.

(impersonal) Of hail, to fall from the sky.

(intransitive) To send or release hail.

To pour down in rapid succession.

(transitive) To greet; give salutation to; salute.

(transitive) To name; to designate; to call.

(transitive) Call out loudly to gain attention or indicate to a public transport driver that one wishes to board using hand signals.

(transitive) To signal in order to initiate communication with.