castaway

Etymology

adj

1. Cast adrift or ashore; marooned.
   After the mutiny, the castaway ship's officers suffered a month at sea in the lifeboat.
2. Shipwrecked.
   The storm left them castaway on an uninhabited island.
3. Cast out; rejected or excluded from a group.

noun

1. (nautical) A shipwrecked sailor.
   Robinson Crusoe was a famous fictional castaway.
2. A discarded person or thing.
   This old coat was a castaway in someone's trash.
3. An outcast; someone cast out of a group or society.
   These homeless people are society's castaways.