MULLION
mullion
(noun) a nonstructural vertical strip between the casements or panes of a window (or the panels of a screen)
Source: WordNet® 3.1
Etymology
Noun
mullion (plural mullions)
A vertical bar between the panes of glass or casements of a window or the panels of a screen.
Coordinate term: transom
Hypernyms: glazing bar, muntin
Verb
mullion (third-person singular simple present mullions, present participle mullioning, simple past and past participle mullioned)
(transitive) To shape into divisions by means of mullions.
Anagrams
• luminol
Source: Wiktionary
Mul"lion, n. Etym: [A corruption of munnion, F. moignon stump of an
amputated limb, stump, OF. moing mutilated; cf. Armor. moñ, mouñ,
mank, monk, and also L. mancus maimed.] (Arch.)
(a) A slender bar or pier which forms the division between the lights
of windows, screens, etc.
(b) An upright member of a framing. See Stile.
Mul"lion, v. t.
Definition: To furnish with mullions; to divide by mullions.
Source: Webster’s Unabridged Dictionary 1913 Edition