a plug or stopper with which people stop up a body of water (see Molina)
Orthographic Variants:
atzaqualoni
Alonso de Molina:
atzaqualoni. tapon con que atapan y cierran el aberca de agua. &c. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 9r. col. 1. Thanks to Joe Campbell for providing the transcription.