Mullion
[n] a nonstructural vertical strip between the casements or panes of a window (or the panels of a screen)
Related Information
Related Terms
baluster, balustrade, banister, doorjamb, doorpost, gatepost, hitching post, jamb, king post, milepost, post, Samson post, signpost, snubbing post, stanchion, standard, stile, upright