a part or piece of the whole, of the the principal portion (see Molina; translation to English here by Stephanie Wood)
Alonso de Molina:
tlaxeliuhcayotl. parte o pedazo delo entero y principal. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 145v. col. 2. Thanks to Joe Campbell for providing the transcription.