To separate (oneself); to dissolve one's association with a person, group, or situation.
To separate into smaller discrete units, as with analysis.
To separate; to disunite; to disintegrate; to dissolve.
To opt out of conventional society.
To leave (school, a race, etc.) prematurely and voluntarily.
Used other than figuratively or idiomatically: see drop, out.
To be lost or momentarily interrupted.