pron /ŋ̄/
Definitions
  1. standard spelling of n̄ (“I”) (used before bá (“conditional marker”)) masculine
Other entries with this spelling
Wiktionary records 2 entries spelled “m̄”. You're reading one of them; here are the others.
Source: Wiktionary · etymology 2, where this word is spelled “m”. Reference: en-m-yo-pron-~-dbUpUu