Venetian blind, a blind for windows, doors, etc., made of thin slats, either fixed at a certain angle in the shutter, or movable, and in the latter case so disposed as to overlap each other when close, and to show a series of open spaces for the admission of air and light when in other positions. -- Venetian carpet, an inexpensive carpet, used for passages and stairs, having a woolen warp which conceals the weft; the pattern is therefore commonly made up of simple stripes. -- Venetian chalk, a white compact or steatite, used for marking on cloth, etc. -- Venetian door (Arch.), a door having long, narrow windows or panes of glass on the sides. -- Venetian glass, a kind of glass made by the Venetians, for decorative purposes, by the combination of pieces of glass of different colors fused together and wrought into various ornamental patterns. -- Venetian red, a brownish red color, prepared from sulphate of iron; -- called also scarlet ocher. -- Venetian soap. See Castile soap, under Soap. -- Venetian sumac (Bot.), a South European tree (Rhus Cotinus) which yields the yellow dyewood called fustet; -- also called smoke tree. -- Venetian window (Arch.), a window consisting of a main window with an arched head, having on each side a long and narrow window with a square head.