nenepanoliztli.

Headword: 
nenepanoliztli.
Principal English Translation: 

copulation, a carnal joining (see Molina); intercourse, sex

IPAspelling: 
nenepɑnoːlistɬi
Alonso de Molina: 

nenepanoliztli. copula, o ayuntamiento carnal.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 68r. col. 1. Thanks to Joe Campbell for providing the transcription.

Attestations from sources in English: 

Niman ie ic qujmjlhvia in telpucheque. Ma oc xicmocevilican in amonacaiotzin: ma oc concaqujcan in jqujn vel onmuchioaz in nenepanoliztli = Then they said to the parents of the youth: "Rest your bodies. Learn when the union can occur" (central Mexico, sixteenth century)
Fr. Bernardino de Sahagún, Florentine Codex: General History of the Things of New Spain; Book 6 -- Rhetoric and Moral Philosophy, No. 14, Part 7, eds. and transl. Arthur J. O. Anderson and Charles E. Dibble (Santa Fe and Salt Lake City: School of American Research and the University of Utah, 1961), 129.

themes: 
Sexuality, Fertility