From The Collaborative International Dictionary of English v.0.48:
Disturbance \Dis*turb"ance\, n. [OF. destorbance.] 1. An interruption of a state of peace or quiet; derangement of the regular course of things; disquiet; disorder; as, a disturbance of religious exercises; a disturbance of the galvanic current. [1913 Webster]
2. Confusion of the mind; agitation of the feelings; perplexity; uneasiness. [1913 Webster]
Any man . . . in a state of disturbance and irritation. --Burke. [1913 Webster]
3. Violent agitation in the body politic; public commotion; tumult. [1913 Webster]
The disturbance was made to support a general accusation against the province. --Bancroft. [1913 Webster]
4. (Law) The hindering or disquieting of a person in the lawful and peaceable enjoyment of his right; the interruption of a right; as, the disturbance of a franchise, of common, of ways, and the like. --Blackstone.
Syn: Tumult; brawl; commotion; turmoil; uproar; hubbub; disorder; derangement; confusion; agitation; perturbation; annoyance. [1913 Webster]