to thank someone with humility for some benefit received (see Molina)
IPAspelling:
iknoːpilmɑti
Alonso de Molina:
icnopilmati. nitla. (pret. onitlacnopilma.) agradecer con humildad el beneficio. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 33v. col. 1. Thanks to Joe Campbell for providing the transcription.