arris

Pronunciation: /ˈæɹɪs/

The English word “arris” has 3 meanings listed here.

noun

A sharp edge or ridge formed by the intersection of two surfaces
A sharp edge or ridge formed by the intersection of two curved surfaces
A ridge formed on the surface of flaked stone, such as an arrowhead or hand axe, as the result of the intersection of two or more flake removals.

From Old French areste, from Latin arista (“beard (of grain), fishbone”). Doublet of arista.

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