the jowl of a person that has a double chin (see Molina)
Orthographic Variants:
quechnacayutl
IPAspelling:
ketʃnɑkɑjoːtɬ
Alonso de Molina:
quechnacayutl. papo de persona papuda. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 88v. col. 1. Thanks to Joe Campbell for providing the transcription.