Three square definitions

Three-square

• (a.) Having a cross section in the form of an equilateral triangle; -- said especially of a kind of file.
Found on http://thinkexist.com/dictionary/meaning/three-square/

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Three-square

Three'-square` adjective Having a cross section in the form of an equilateral triangle; -- said especially of a kind of file.
Found on http://www.encyclo.co.uk/webster/T/49

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