flue
/fluː/
noun
- A pipe or channel that carries smoke, hot air, or gases from a fireplace, furnace, or boiler to the outside.
- A blocked flue can cause dangerous carbon monoxide to build up inside the house.
- Smoke rose through the flue and disappeared into the night sky.
- The chimney sweep cleaned the flue to prevent a fire hazard.
- A passage in a heat exchanger or a duct for air circulation.
- The technician checked the flue for any cracks or leaks.
- The furnace's flue needs to be inspected before winter.
- Hot air travels through the flue to heat the rooms upstairs.