a furrow made by a plow; or, a ridge turned up by a plow or a spade (see Molina)
Alonso de Molina:
cuematlauhtli. surco de arado, o de camellones. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 26r. col. 1. Thanks to Joe Campbell for providing the transcription.