for a tree to put down roots (see Molina)
nelhuayoa. (pret. onelhuayoac.) echar rayzes el arbol. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 66v. col. 1. Thanks to Joe Campbell for providing the transcription.