01 n. A slender bar or pier which forms the division between the lights of windows, screens, etc.
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1.
A slender bar or pier which forms the division between the lights of windows, screens, etc.(Arch.)
Entry
2 senses · 2 variants
Webster, 1913
Mullion
· Mul·lion
· IPA /ˈmʌliən/
02 v. t. To furnish with mullions; to divide by mullions.
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1.
To furnish with mullions; to divide by mullions.