1. devices that reduce vibration, sound, or movement
Usage: mechanical/engineering
2. adjustable plates in chimneys or ducts that control airflow
Usage: construction/HVAC
3. things that discourage enthusiasm or dampen spirits
Usage: figurative

Examples

• The car’s dampers absorbed most of the shock from the bumpy road.
• Close the dampers in the fireplace to prevent heat loss.
• The mechanic replaced the worn dampers in the suspension system.
• Adjust the dampers in the air conditioning ducts for better airflow.
• The rain was a real damper on our picnic plans.
• Don’t be such dampers on everyone’s excitement about the trip.