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Domestic Architecture - the architecture of the house.

Doric - Simplest of the three Greek orders, characterized by thick columns and a capital composed of a flat bowl below a block. The column does not stand on a base. see also Corinthian and Ionic

Dormer - A structure projecting from a sloping roof, usually housing a window.

Double Hung Window - A window having two balanced sashes, one sliding vertically over the other.

Dowel Rod - a short, round, slender wooden element used in Victorian styles; usually found in decorative screens.

Downtown - During the 19^th and early decades of the 20^th century, downtown was the compact, centralized district to which all of a community's residents came to  work, conduct personal business, shop, and play.  Governmental offices, businesses and stores, and cultural and amusement facilities were located there.  Depending upon the size of the town, downtown might include only one street or expand into perpendicular and parallel streets.  Also known as "Main Street" and the "Central Business District (CBD)."