Definitions

1. noun

A person, especially a sailor, who is left stranded or abandoned on a deserted island, often as a form of punishment.

“The castaway was rescued after being a marooner for several weeks.”

2. noun

A pirate who is left to fend for himself on a deserted island after being shipwrecked or mutinied.

“The infamous pirate was a marooner for many years before being rescued.”

3. verb

To leave (someone) stranded or abandoned on a deserted island, often as a form of punishment.

“The captain marooned the mutinous sailor on a deserted island.”