Definitions
1.nounThe act of disturbing, being disturbed.
2.nounSomething that disturbs."That guy causes a lot of trouble, you know, he's such a disturbance."
3.nounA noisy commotion that causes a hubbub or interruption.
4.nounAn interruption of that which is normal or regular.
5.nounA serious mental imbalance or illness.