lüˈkärn, -kȧn noun
( -s )
Etymology: alteration (influenced by French lucarne dormer window, from Middle French, alteration — influenced by Middle French luiserne, luserne lantern, from Latin lucerna lamp — of lucanne ) of earlier lucane, from Middle French lucanne, from Old French, from (assumed) Old Frankish lūkinna, from lūk something that closes (akin to Middle Dutch luke something that closes, fence) + -inna, diminutive suffix; akin to Old English lūcan to close — more at lock
: dormer window