nenecoc.

Headword: 
nenecoc.
Principal English Translation: 

on, to, or from both sides, both sides of several things (see Molina and Kartunnen)

IPAspelling: 
neːnekok
Alonso de Molina: 

nenecoc. a vna parte y a otra, o de vna parte y de otra, o al vnlado y al otro, o a ambos lados.
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.

Frances Karttunen: 

NĒNECOC on, to or from both sides, both sides of several things / a una parte y a otra, o de una parte y de otra, o al un lado y al otro, o a ambos lados (M), pluralidad de cosas que tienen los dos lados (C) [(4)Cf.92r,y2v]. redup. NECOC.
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 167.

Attestations from sources in English: 

auh yn jnacaztitech nenecoc pipilcatiujia teucujtlaepcololli: yoan conaqujaia icoiolnacoch, teuxiujtl in tlachioalli, tlaxiuhçalolli: yoan chipolcuzcatl, yn jcuzquj, oc cepa yielpancuzquj iztac cilin = And from both ears hung curved, gold, shell pendants. And they fitted [his ears] with ear plugs made a mosaic of turquoise. And [he wore] a shell necklace. Moreover, his breast ornament was of white seashells. (16th century, Mexico City)
Fr. Bernardino de Sahagún, Florentine Codex: General History of the Things of New Spain; Book 2—The Ceremonies, No. 14, Part III, 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, 1951), 67.

themes: 
Numbers, Math