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.