a lonely thing or he who makes something on his own (see Molina)
Orthographic Variants:
mixcauia
Alonso de Molina:
mixcauia. cosa sola, o el que asus solas haze alguna cosa. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 57r. col. 1. Thanks to Joe Campbell for providing the transcription.