gall (a botanical condition of a tree, a result of larva or infection, such as one sees in oak apples) (see Molina)
Orthographic Variants:
quauhcacapulin
Alonso de Molina:
quauhcacapulin. agallas de arboles. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 86r. col. 2. Thanks to Joe Campbell for providing the transcription.