1
a series of vibrations induced in the earth's crust by the abrupt rupture and rebound of rocks.
2
a violent, tropical, cyclonic storm.
3
a large mass of snow, ice, etc., detached from a mountain slope and sliding or falling suddenly downward.
4
a localized, violently destructive windstorm occurring over land.
5
a vent in the earth's crust through which lava, steam, ashes, etc., are expelled, either continuously or at irregular intervals.
6
a great flowing or overflowing of water, especially over land not usually submerged.
