from the GNU version of the Collaborative International Dictionary of English
- n. An instrument used by carpenters, joiners, etc., for laying off right angles off right angles, and testing whether work is square.
from The Century Dictionary and Cyclopedia
- n. A carpenters' square. Also trial-square and trying-square. See square, 5.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a square having a metal ruler set at right angles to another straight piece
Sorry, no etymologies found.