cocotli. garguero. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 23v. col. 2. Thanks to Joe Campbell for providing the transcription.
Frances Karttunen:
CŌCOHTLAN neck, throat / su garganta, su cuello (T for possessed form) [(1)Tp.128]. T consistently has the reflex of CŌCŌ for CŌCOH. X has the variant form CŌCOHTITLAN, of which this may be a shortened form. See CŌCOH-TLI. Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 38.