Mul"lion (?), n. [A corruption of munnion, F. moignon stump of an amputated limb, stump, OF. moing mutilated; cf. Armor. mon, moun, 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.
© Webster 1913.
Mul"lion, v. t.
To furnish with mullions; to divide by mullions.
© Webster 1913.