The Collaborative International Dictionary of English v.0.48:
Norman \Nor"man\, prop. a. [F. normand, of Scand. origin. See
Northman, and cf. Norse.]
Of or pertaining to Normandy or to the Normans; as, the
Norman language; the Norman conquest.
Norman style (Arch.), a style of architecture which arose
in the tenth century, characterized by great massiveness,
simplicity, and strength, with the use of the semicircular
arch, heavy round columns, and a great variety of
ornaments, among which the zigzag and spiral or
cable-formed ornaments were prominent.