name, noun, verb ·Uncommon ·Advanced level

Definitions

Noun

1. 1
   A vertical bar between the panes of glass or casements of a window or the panels of a screen.
2. 2
   a nonstructural vertical strip between the casements or panes of a window (or the panels of a screen) wordnet

Verb

1. 1
   To shape into divisions by means of mullions. transitive

Proper Noun

1. 1
   A village and civil parish in south-west Cornwall, England (OS grid ref SW6719).
2. 2
   A locality in Yass Valley council area, Southern Tablelands, New South Wales, Australia.

Synonyms

All synonyms

balusterbalustradebanisterdoorjambdoorpostgatepost

Etymology

Alteration of monial (“mullion”), or metathesis of Middle English moyniel, both ultimately from Old French moinel.

Related phrases

Mullion Creek

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.