Definitions for: Dormer

[n] a gabled extension built out from a sloping roof to accommodate a vertical window

Webster (1913) Definition: Dor"mer, or Dormer window Dor"mer win"dow, n.
[Literally, the window of a sleeping apartment. F. dormir to
sleep. See Dormant, a. & n.] (Arch.)
A window pierced in a roof, and so set as to be vertical
while the roof slopes away from it. Also, the gablet, or
houselike structure, in which it is contained.

Synonyms: dormer window

See Also: window