to get involved in something difficult and dangerous (see Molina)
Orthographic Variants:
ouican aquia
Alonso de Molina:
ouican aquia. nin. (pret. oninocuican aqui.) meterse, o ponerse endificultad y peligro. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 78r. col. 2. Thanks to Joe Campbell for providing the transcription.