1. a person employed to keep watch and guard property, especially at night

Examples

• The night watchman patrols the factory grounds every hour.
• A security watchman discovered the break-in at dawn.
• The old watchman carried a flashlight and keys to all the buildings.
• They hired a watchman to protect the construction site from vandals.
• The watchman’s dog helped him guard the warehouse.
• During his rounds, the watchman checks all doors and windows.