Definition of three-square
(Entry 1 of 2)
: having an equilateral triangular cross section
—used especially of a file
three-square
nounDefinition of three-square (Entry 2 of 2)
1
or 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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“Three-square.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/three-square. Accessed 5 Oct. 2022.
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