a berry-like fruit; possibly blackberry fruit (see Molina)
IPAspelling:
koːɑːtɬɑnʃokotɬ
Alonso de Molina:
coatlanxocotl. fruta de zarzamora. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 23r. col. 1. Thanks to Joe Campbell for providing the transcription.