1. To cause or to make a break in the continuity or uniformity of (a course, process, condition, etc.): "The classes in the school were interrupted by an emergency announcement that the building had to be evacuated immediately."
2. To break off or cause to cease (stop), as in the middle of something: "He interrupted his work to answer the phone."
3. To stop (a person) in the midst of doing or saying something; especially, by an interjected remark: "May I interrupt you to comment on your last remark?"