an act involving a lance or a net used by people who fish (see Molina; loose translation to English here by Stephanie Wood)
IPAspelling:
tɬɑmɑːtɬɑtɬɑːsɑlistɬi
Alonso de Molina:
tlamatlatlazaliztli. lance de pescadores. s. el acto de echar, o lanzar la red para pescar. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 126r. col. 1. Thanks to Joe Campbell for providing the transcription.