Distraction (noun)

1. Something that diverts one's attention from what one is doing.
2. Something that causes one to lose focus or become preoccupied.

Origin:

Late 16th century: from latin distractio(n-), from distrahere "draw apart".

Examples:

1. The loud noise was a major distraction while I was trying to concentrate.
2. She found it hard to work with all the distractions in the open-plan office.
3. The bright lights in the room were a constant distraction during the movie.
4. He needed a quiet place to work without any distractions.
5. The announcement caused a momentary distraction for the audience.