a fencer, one who fences, or someone new in war (see Molina)
Alonso de Molina:
moyaomamachtiqui. esgremidor o nueuo enla guerra. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 58r. col. 2. Thanks to Joe Campbell for providing the transcription.