tlaceliya.

Headword: 
tlaceliya.
Principal English Translation: 

for new growth to take place, for leaves to come out (see Karttunen); for spring to arrive

IPAspelling: 
tɬɑseliyɑ
Frances Karttunen: 

TLACELIY(A) pret: TLACELIZ – TLACELIYAC for new growth to take place, for leaves to come out / todo reverdece (C) [(2)Cf.36v,51r]. This contrasts with TLACELIĀ ‘to receive communion’. See CELIY(A).
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 254.

Attestations from sources in Spanish: 

tlaceliya = todo reverdese, llega la primavera.
Nelson Yolohmazatl, posting on the Nāhuamachtīlōyān page in Facebook, March 20, 2014.