tzoncayahua.

Headword: 
tzoncayahua.
Principal English Translation: 

to muss one’s hair; to groom someone (see Karttunen)

Orthographic Variants: 
tzoncayāhua
IPAspelling: 
tsonkɑyɑːwɑ
Frances Karttunen: 

TZONCAYĀHU(A) vrefl,vt to muss one’s hair; to groom someone / despeina el cabello (T), lo peina (al otro) (T) [(6)Tp.162,214]. The senses of the reflexive and transitive uses of this verb appear to be opposite. See TZON-TLI, CAYĀHU(A).
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 317.