01 n. The sharp edge or salient angle formed by two surfaces meeting each other, whether plane or curved; -- applied particularly to the edges in…
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1.
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.(Arch.)
Phrases & compounds
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.