three-square

American  

[three-skwair] / ˈθriˈskwɛər /

adjective

1. having an equilateral triangular cross section, as certain files.

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three-square British  

adjective

1. having a cross section that is an equilateral triangle

   a three-square file

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Etymology

Origin of three-square

1400–50; late Middle English thre square threefold, modeled on foursquare

Example Sentences

According to one account, the sulfurous stank emanating from the White House lawn polluted the air for about three-square miles.

From Salon

Russian forces in March had established their headquarters within the three-square kilometre airport complex, which was repeatedly bombed by Ukrainian forces.

From Reuters

What if you weren’t merely confined to your house or apartment or the three-square feet of hot-desk space provided at your company’s headquarters, 45 soul-killing minutes from where you live?

From New York Times

To qualify, residents must have lived in a roughly three-square mile area in Peshtigo and lived in or owned a residence with a private well between Jan. 1, 1965, and Dec. 31, 2020.

From Washington Times

Yongbyon meanwhile, the official said, “is a sprawling three-square mile site, with more than 300 different separate facilities located on it, all of which are dedicated to supporting the nuclear weapons program in North Korea.”

From The Guardian