tequio.

Headword: 
tequio.
Principal English Translation: 

that which owes tribute

James Lockhart, The Nahuas after the Conquest: A Social and Cultural History of the Indians of Central Mexico, Sixteenth through Eighteenth Centuries (Stanford: Stanford University Press, 1992), 157.

Alonso de Molina: 

tequio. cosa que tiene o da trabajo.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 105r. col. 2. Thanks to Joe Campbell for providing the transcription.

themes: 
Tributes, Taxation, Service