to swear or pledge by kissing the ground, or to eat dirt (see Molina)
Orthographic Variants:
tlalqua
Alonso de Molina:
tlalqua. ni. (pret. onitlalqua.) jurar besando la tierra, o comer tierra. 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.