from the GNU version of the Collaborative International Dictionary of English
- n. one in which a horizontal bar is placed in true position by means of a plumb line, to which it is at right angles.
- n. See under Level.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a carpenter's level with a plumb line at right angles to it
Sorry, no etymologies found.