quitzacuia.

Headword: 
quitzacuia.
Principal English Translation: 

the last one of all (see Molina); or, the person of the least means, a poor person (see Sahagún)

Orthographic Variants: 
quitzacuja
Alonso de Molina: 

quitzacuia. el postrero o cabero de todos.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 90v. col. 1. Thanks to Joe Campbell for providing the transcription.

Attestations from sources in English: 

Auh in qujtzacuja, tlaqualtzintli, atzintli, octli: injc qujtlapaloa = And he who was of the least greeted with food, with drink, with pulque (central Mexico, sixteenth century)
Fr. Bernardino de Sahagún, Florentine Codex: General History of the Things of New Spain; Book 6 -- Rhetoric and Moral Philosophy, No. 14, Part 7, 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), 196.