arris
ar·ris
noun \ˈa-rəs, ˈer-əs\ plural arris or ar·ris·es
Definition of ARRIS
: the sharp edge or salient angle formed by the meeting of two surfaces especially in moldings
Origin of ARRIS
probably modification of Middle French areste, literally, fishbone, from Late Latin arista — more at arête
First Known Use: 1677
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