from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Having an equilateral triangular cross section: a three-square file.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Having a cross section in the form of an equilateral triangle; said especially of a kind of file.
from the GNU version of the Collaborative International Dictionary of English
- adj. having three, five, etc., equal sides; as, a three-square file.
- adj. Having a cross section in the form of an equilateral triangle; -- said especially of a kind of file.
from The Century Dictionary and Cyclopedia
- See square.
Sorry, no etymologies found.