engma

Perhaps a blend of eng and agma.

engma (plural engmas)

1. The letter eng, ŋ.
   • 1985, James Joseph Errington, Language and Social Change in Java: Linguistic Reflexes of Modernization in a Traditional Royal Polity:

     The velar nasal (engma) is transcribed as /ng/.

   • 1989, Elizabeth A. Edwards, “A Computer Column for All Seasons”, in Margaret S. Boone, editor, Practicing Anthropology, volume 11, number 2:

     We kept some of the foreign alphabet symbols such as the accented and umlauted vowels and Greek letters and used the rest of the space for more esoteric linguistic symbols such as "barred-l," and "engma."

• Megan, Megna, Gemna, GenAm, AmEng, mange, Ganem