louver (US) noun
or British louvre /ˈluːvɚ/ plural louvers
or British louvre /ˈluːvɚ/ plural louvers
Learner's definition of LOUVER
[count]
1
: an opening in a door or window that has one or more slanted strips to allow air to flow in and out while keeping out rain and sun百叶窗;百叶门;气窗
2
: one of the slanted strips of a louver百叶窗板
— louvered
(US) or British louvred /ˈluːvɚd/ adjective