something that has been moderated, smoothed, evened, brought to room temperature, etc. (see Molina)
IPAspelling:
tɬɑjɑmɑːniliːlli
Alonso de Molina:
tlayamanililli. ablandada cosa assi. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 120v. col. 2. Thanks to Joe Campbell for providing the transcription.