something quartered, or with four corners (see Molina)
Alonso de Molina:
nauhcampa nacace. cosa quadrada, o de quatro esquinas. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 063v. col. 2. v. col. 2. Thanks to Joe Campbell for providing the transcription.