Monday, the second day of the week (see Molina)
(partly a loanword from Spanish, semana, week)
Orthographic Variants:
icomilhuitl semana
Alonso de Molina:
icomilhuitl semana. el lunes. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 33v. col. 1. Thanks to Joe Campbell for providing the transcription.