one who has an unpleasant tingling in the teeth (see Molina)
Orthographic Variants:
xocociuini
Alonso de Molina:
xocociuini. elque tiene dentera. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 160v. col. 1. Thanks to Joe Campbell for providing the transcription.