the conjunction of branches and leaves that make the exterior of the tree (like the canopy) (see Molina)
Alonso de Molina:
malacayoticac. arbol copado. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 51v. col. 1. Thanks to Joe Campbell for providing the transcription.