Definitions

1. noun

a punishment in which a person was dragged under a ship’s keel, often as a form of discipline or execution

“The mutineer faced keelhauling as a severe penalty for his actions.”

2. verb

to punish or discipline someone by dragging them under a ship’s keel, or to treat someone with a similar level of severity or cruelty

“The captain threatened to keelhaul the crew member for refusing to follow orders.”