'Dormant window' definitions:

Definition of 'Dormant window'

From: GCIDE

Dormancy \Dor"man*cy\, n. [From Dormant.] The state of being dormant; quiescence; abeyance. [1913 Webster]
It is by lying dormant a long time, or being . . . very rarely exercised, that arbitrary power steals upon a people. --Burke. [1913 Webster]
2. (Her.) In a sleeping posture; as, a lion dormant; -- distinguished from couchant. [1913 Webster]
Dormant partner (Com.), a partner who takes no share in the active business of a company or partnership, but is entitled to a share of the profits, and subject to a share in losses; -- called also sleeping partner or {silent partner}.
Dormant window (Arch.), a dormer window. See Dormer.
Table dormant, a stationary table. [Obs.] --Chaucer. [1913 Webster]