from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A vertical member, as of stone or wood, dividing a window or other opening.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A vertical bar between the panes of glass or casements of a window or the panels of a screen.
from the GNU version of the Collaborative International Dictionary of English
- n. A slender bar or pier which forms the division between the lights of windows, screens, etc.
- n. An upright member of a framing. See stile.
- transitive v. To furnish with mullions; to divide by mullions.
from The Century Dictionary and Cyclopedia
- n. In architecture:
- n. One of the divisions between panels in wainscoting. Formerly monial.
- To form into divisions by the use of mullions.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a nonstructural vertical strip between the casements or panes of a window (or the panels of a screen)
Alteration of Middle English moniel, from Anglo-Norman moynel, perhaps from moienel, middle, from moien, from Latin mediānus, from medius.(American Heritage® Dictionary of the English Language, Fourth Edition)