an herb (caliandra anomala) used in a remedy for urinary obstruction
Fr. Bernardino de Sahagún, Florentine Codex: General History of the Things of New Spain; Book 10 -- The People, No. 14, Part 11, eds. and transl. Arthur J. O. Anderson and Charles E. Dibble (Santa Fe and Salt Lake City: School of American Research and the University of Utah, 1961), 159.
to give someone a headache through excessive importunity
James Lockhart, Nahuatl as Written: Lessons in Older Written Nahuatl, with Copious Examples and Texts (Stanford: Stanford University Press and UCLA Latin American Studies, 2001), 240.
head town (cabecera, in the Spanish town hierarchy system); the root is tzontecon- (cabeza, head)
(Amecameca, 1746) Frances Karttunen and James Lockhart, "Textos en náhuatl del siglo XVIII: Un documento de Amecameca, 1746," Estudios de Cultura Náhuatl 13 (1978), 153–175, ver 159.