SG Heritage Dictionary

Arris [Noun] Webster's Dictionary 1913

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.

Arrish [Noun] Webster's Dictionary 1913

The stubble of wheat or grass; a stubble field; eddish.

Arriswise [Adverb] Webster's Dictionary 1913

Diagonally laid, as tiles; ridgewise.