| arris | The sharp edge or salient angle formed by two surfaces meeting each other, whether plane or curved; applied particularly to the edges in moldings, and to the raised edges which separate the flutings in a Doric column. Arris fillet, a triangular piece of wood used to raise the slates of a roof against a chimney or wall, to throw off the rain. Arris gutter, a gutter of a V form fixed to the eaves of a building. Origin: OF. Areste, F. Arete, fr. L. Arista the top or beard of an ear of grain, the bone of a fish. Source: Websters Dictionary (01 Mar 1998) |
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