Noah Webster's New International Dictionary of the English Language

1. (v. t.) To throw into disorder or confusion; to derange; to interrupt the settled state of; to excite from a state of rest.

2. (v. t.) To agitate the mind of; to deprive of tranquility; to disquiet; to render uneasy; as, a person is disturbed by receiving an insult, or his mind is disturbed by envy.

3. (v. t.) To turn from a regular or designed course.

4. (n.) Disturbance.