Borrowed from French moellon. Doublet of modillion.
moellon (countable and uncountable, plural moellons)
Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
(See the entry for “moellon”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.)
From an alteration of Old French moilon (influenced by moelle), itself probably from a Vulgar Latin *mūtuliōnem, from Latin mūtulus (“stone or wood overhang”). Compare Italian modiglione; cf. also Spanish mojón. Doublet of modillon, taken from Italian.
moellon m (plural moellons)