downdraft

/ˈdaʊnˌdræft/
noun
  1. A downward current of air, often in a storm or near a mountain.
    • A powerful downdraft from the thunderstorm knocked down several trees.
    • The pilot flew the plane out of the sudden downdraft to avoid losing altitude.
    • Hikers were warned about strong downdrafts near the cliff edge.
  2. A downward flow or movement of gas, smoke, or liquid in a confined space.
    • The chimney's downdraft pushed smoke back into the room.
    • The engineer adjusted the fan to prevent a downdraft in the exhaust pipe.
    • A downdraft in the ventilation system carried dust into the basement.
Antonyms