Definify.com
Webster 1913 Edition
Three-square
Three′-squareˊ
,Adj.
Having a cross section in the form of an equilateral triangle; – said especially of a kind of file.
Definition 2024
three-square
three-square
English
Adjective
three-square (not comparable)
- Having a cross section in the form of an equilateral triangle; said especially of a kind of file.