a pillow (head rest); or, something that serves as a cabecera (head town) in the Spanish system of town hierarchy (see Molina)
IPAspelling:
tsonikpɑlli
Alonso de Molina:
tzonicpalli. almohada, o cosa que sirue para cabecera. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 153r. col. 2. Thanks to Joe Campbell for providing the transcription.