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tlacuahua.

Headword: 
tlacuahua.
Principal English Translation: 

to harden, to harden something (see Karttunen)

Orthographic Variants: 
tlacuāhua
IPAspelling: 
tɬɑkwɑːwɑ
Frances Karttunen: 

TLACUĀHUA to harden /endurecerse o empedernirse algo (M). Z has the variant TLACUĀHUAYA. The long vowel of the second syllable is attested in B, C and Z, which is evidence against derivational relationship to CUAUHTI ‘to stiffen’ despite the affinity of meaning. M also has this as a transitive verb ‘to harden something.’ The intransitive and transitive verbs contrast in the preterit with TLACUĀHUAC and TLACUĀUH respectively.

TLACUĀHU(A) vt to harden something / endurecer algo (M). See TLACUĀHUA.
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 257.