having three corners: a three-cornered hat.
pertaining to or involving three persons, parties, or things: The candidates were deadlocked in a three-cornered tie.

Origin of three-cornered

First recorded in 1350–1400, three-cornered is from the Middle English word thre cornerid. See three, cornered Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for three-cornered

Historical Examples of three-cornered

  • If it were a three-cornered fight, I might yet bear my part.

  • Bring me that three-cornered, blue bottle from the cupboard, Susie.

    Tabitha's Vacation

    Ruth Alberta Brown

  • Would it have been in that three-cornered strip that runs along by the road?

    Torchy As A Pa

    Sewell Ford

  • He was intercepted, and the argument took on a three-cornered aspect.

    The Huntress

    Hulbert Footner

  • The leaf grows on a three-cornered stalk, and is about a yard long.