a noise from someone who is startling another (see Molina)
Orthographic Variants:
xih
Alonso de Molina:
xih. del que espanta a otro. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 159r. col. 2. Thanks to Joe Campbell for providing the transcription.