acayotl.

Headword: 
acayotl.
Principal English Translation: 

conduit, piping, tubing, urinary equipment of a male (human or animal); or the penis itself

IPAspelling: 
ɑːkɑjoːtɬ
Alonso de Molina: 

acayotl. cosa del caño de la orina o de la verga del animal, o la misma verga.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 1r. col. 2. Thanks to Joe Campbell for providing the transcription.

Lockhart’s Nahuatl as Written: 

ācayōtl = piping, tubing, urinary equipment of a male
James Lockhart, Nahuatl as Written: Lessons in Older Written Nahuatl, with Copious Examples and Texts (Stanford: Stanford University Press and UCLA Latin American Studies, 2001), 210.

themes: 
Anatomy
Sexuality, Fertility