Dormant \Dor"mant\, n. [See Dormant, a.]

(Arch.) A large beam in the roof of a house upon which portions of the other timbers rest or " sleep." --Arch. Pub. Soc. -- Called also dormant tree, dorman tree, dormond, and dormer. --Halliwell. Dormer

Source: The Collaborative International Dictionary of English v.0.48
 

Dormer \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. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

26 Moby Thesaurus words for "dormer": bay, bay window, bow window, casement, casement window, fan window, fanlight, grille, lancet window, lantern, lattice, light, louver window, oriel, pane, picture window, port, porthole, rose window, skylight, transom, wicket, window, window bay, window glass, windowpane

Source: Moby Thesaurus II by Grady Ward, 1.0
 

dormer

Source: WordNet (r) 2.0
 

Dormer \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.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Dormant \Dor"mant\, n. [See Dormant, a.]

(Arch.) A large beam in the roof of a house upon which portions of the other timbers rest or `` sleep.'' --Arch. Pub. Soc. -- Called also dormant tree, dorman tree, dormond, and dormer. --Halliwell.

Source: Webster's Revised Unabridged Dictionary (1913)