1. the lord or governor of a castle or fortified town
Usage: historical; often used in medieval European contexts
2. a chain or clasp worn at the waist, typically used to hold keys, a watch, or other small items
Usage: also called a chatelaine

Examples

• The chatelain of the fortress commanded the guards and maintained order within the castle walls.
• During the medieval period, each chatelain was responsible for collecting taxes and administering justice in their territory.
• The lady wore a decorative chatelain from which hung her keys and sewing implements.
• As chatelain, he oversaw the defense of the stronghold against invading forces.
• The ornate chatelain was a symbol of her authority and household management.