Definition of dropouts:
(n) :
Someone who has left an educational institution without completing the course
(n) :
Someone who has opted out of conventional society.
(n) :
One who suddenly leaves anything, or the act of doing so.
(n) :
Momentary loss of an electronic signal.
(n) :
A damaged portion of a tape or disk, causing a brief omission of audio, video, or data.
(n) :
(cycling) The slot in the frame that accepts the axles of the wheels.