ardois-system
Ar`dois" sys"tem. (Naut.) Defn: A widely used system of electric night signals in which a series of double electric lamps (white and red) is arranged vertically on a mast, and operated from a keyboard below.
Ar`dois" sys"tem. (Naut.) Defn: A widely used system of electric night signals in which a series of double electric lamps (white and red) is arranged vertically on a mast, and operated from a keyboard below.