a mark from a whip or a punch (i.e. being black and blue?); or greenery in a meadow (see Molina)
Orthographic Variants:
xoxouiliztli
Alonso de Molina:
xoxouiliztli. cardenal o señal de azote, o golpe, o verdor de prado. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 161v. col. 1. Thanks to Joe Campbell for providing the transcription.