three–square
Definition of three–square
: having an equilateral triangular cross section —used especially of a file
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Origin and Etymology of three–square
Middle English thre sqware having three equal sides, from three, thre three + sqware, square square
three–square
Definition of three–square
1 less commonly three–square rush [so called from the triangular stems] : any of various rushes of the genus Scirpus; especially : chairmaker's rush
2 : a three-square file
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