something square, or squared (see Molina), i.e. the same on all sides
Orthographic Variants:
nouiampa ixquich
Alonso de Molina:
nouiampa ixquich. cosa quadrada. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 74r. col. 2. Thanks to Joe Campbell for providing the transcription.