Mun definitions

Municipal.
abbreviation
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(law) Abbreviation of municipal.
noun
1
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(obsolete, dialect) The mouth, jaw.
noun
1
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(dialect, Northern England, modal auxiliary, defective) Must.
verb
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(gaming) The person who roleplays a character in a role-playing game, especially an online play-by-post one.
noun
0
0

Origin of mun

From Old Norse muðr, munnr, from Proto-Germanic *munþaz, from Proto-Indo-European *ment-; compare mouth