to put something beneath another person's feet (see Molina, who give the example of the verb conjugated in the first person)
Alonso de Molina:
icxipepechtilia. nimitz. (pret. onimitz icxipepechtili.) poner te yo algo debaxo de los pies. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 34r. col. 2. Thanks to Joe Campbell for providing the transcription.