To put (a person) ashore on a desolate island or coast and leave him to his fate.

This was a harsh method of punishment for a pirate who broke the code of conduct over and over again. The pirate would be left on a deserted island with no food, weapons, or water to die.

a person who is stranded (as on an island); "when the tide came in I was a maroon out there"

leave stranded or isolated withe little hope og rescue; "the travellers were marooned"

leave stranded on a desert island without resources; "The mutinous sailors were marooned on an island"

To put a person ashore with no means of returning.