Pronunciation: (mun'tn), [key]
1. Also called sash bar. a bar for holding the edges of window panes within a sash. See diag. under double-hung.
2. (formerly) a vertical bar in a window sash.
3. a stile within the frame of a door or the like.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.