ˈdȯrmər, ˈdȯ(ə)mə(r noun
( -s )
Etymology: French dormoir, from Latin dormitorium — more at dormitory
1. obsolete : bedroom
2. or dormer window
a. : a usually gabled extension of an attic room through a sloping roof to allow for a vertical window opening into the room
b. : the window in such an extension