What is "mullions"

Usage examples of "mullions".

Its façade was pockmarked, its mullions splintered, its dripstones snapped off.

The sun sheened from the chrome-nickel steel mullions and into his eyes, but he could make out a small, dark shape huddled against the spandrels.

Overcome by nausea I thrust my head between the mullions and sucked at the cool air.

So, in the warm-looking light of sunset, it was not only the mullions which had an amber glow.

Roark, if you're so stubborn about it, but why can't you put mullions on the panes?

A doorway in a wall of torn paper and broken wooden mullions led to more rooms.

Gleaming paint accented the woodwork in traditional Chinese colors: green for window mullions, red and yellow for the roofs' intricate structural members.

Heavy oak mullions crosshatched in the doors divided them into a dozen glass panes each.