iltequi.

Headword: 
iltequi.
Principal English Translation: 

to sip something (see Molina); to sip, suck, drink something (see Karttunen)

IPAspelling: 
ilteki
Alonso de Molina: 

iltequi. nitla. (pret. onitlaltec.) soruer algo.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 37v. col. 2. Thanks to Joe Campbell for providing the transcription.

Frances Karttunen: 

(I)LTEQU(I) vt to sip, suck, drink something / sorber algo (M), lo bebe (caldo, huevo, etc.) (T) [(1)Bf.I Iv, (3)Tp.188]. (I)LTEQUĪHUA nonact. (I)LTEQU(I) (I)LTEQUĪTIĀ caus. (I)LTEQU(I)
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 105.