The action of part or all of a national population violently rising up against the government or other authority; (countable) an instance of this; a revolt, an uprising; specifically, one that is at an initial stage or limited in nature.
The state or fact of being turbulent or agitated; tempestuousness, disturbance.
Disturbance in a gas or fluid, characterized by evidence of internal motion or unrest.
Specifically, a state of agitation or disturbance in the air which is disruptive to an aircraft.
An instance or type of such state or disturbance.