What is "nonreturner"

n. One who does not return (to a previous location, way of life, etc.).

A nonreturner is a person who did not return to some initial destination point, or to previous way of life, etc.

• Never-returners , a group of noble disciples (Buddhist Sekhas) on the Buddhist path.
• Nonreturnees , a slang term for Soviet citizen who refused to come back to USSR from the trips abroad.