1. a person or device that removes or empties something from a place or container
Usage: often used in technical or medical contexts
2. a person who evacuates or leaves a place, especially during an emergency
Usage: less common than 'evacuee'

Examples

• The surgical evacuator was used to remove fluid from the wound.
• A dental evacuator helps keep the patient's mouth dry during procedures.
• The evacuator pump efficiently drained the flooded basement.
• During the fire drill, each evacuator was assigned a specific exit route.
• The building's evacuation plan designated trained staff as evacuators to guide others.