Definition of "three-cornered" [three•-cor•nered]

• Having three corners; triangular. (adjective)

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• "Dick palmed a three-cornered sail needle through a set of broken pack straps, his good nature in nowise disturbed by the feminine cataclysm which was threatening to burst in the storm-beaten tent."
• "The three-cornered needle jammed in the damp leather, and he suspended work for the moment."
• "Then they sat down to a three-cornered game of 'cut-throat,' -- a proceeding which did away with all casus belli for future hostilities, and permitted the victor to depart on a most important mission."