from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A steel beam with a hollow rectangular cross section; used for constructing bridges
from the GNU version of the Collaborative International Dictionary of English
- n. a box beam.
from The Century Dictionary and Cyclopedia
- n. In mech., a kind of girder resembling a box, made of boilerplates fastened together by angle-irons riveted to the top and bottom plates.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a beam built up from boards; has a hollow rectangular cross section
Sorry, no etymologies found.