ˌäˌbäˈväⁿ, F ȧbȧväⁿ noun
( plural abat-vents -äⁿz, F -äⁿ)
Etymology: French, from abattre to throw down + vent wind, from Latin ventus — more at abate , wind
1. : a series of sloping boards used (as in a belfry light) to break the wind without obstructing the passage of air or sound
2. : a sloping roof (as of a penthouse)
3. : a metal chimney cap