a knife used to cut the cord, or rope that has been tied to hold a bundle of something (see Molina)
IPAspelling:
tɬɑlpilitstɬi
Alonso de Molina:
tlalpilitztli. nauaja dela tierra para cortar el cordel, o soga con que algo ato y lio. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 124v. col. 1. Thanks to Joe Campbell for providing the transcription.