Headword:
nenacayotiliztli.
Principal English Translation:
embodiment; this seems to be a calque for the Spanish, encarnación (incarnation) of Jesus Christ
Attestations from sources in Spanish:
ipan sabado de Ramos ilhuitl inenacayotilitzin in totecuio Jesuchristo = en sábado de Ramos, día de la Encarnación de Nuestro Señor Jesucristo (Puebla, 1797)