huecapa.

Headword: 
huecapa.
Principal English Translation: 

to or from a great distance
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), 218.

also, tall or high

Orthographic Variants: 
vecapa, huecapan, uecapan, vecapan
IPAspelling: 
wehkɑpɑ
Alonso de Molina: 

uecapa. de lexos. aduerbio.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 155r. col. 2. Thanks to Joe Campbell for providing the transcription.

Frances Karttunen: 

HUEHCAPA to, from afar / de lejos (M), desde lejos (C) See HUEHCA, -PA.
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 82.

Lockhart’s Nahuatl as Written: 

particle. huehca, -pa.
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), 218.

Attestations from sources in English: 

cenca tivecapa tixpiano = you who are most high and Christian (Huejotzingo, 1560)
Beyond the Codices, eds. Arthur J.O. Anderson, Frances Berdan, and James Lockhart (Los Angeles: UCLA Latin American Center, 1976), Doc. 29, 176–177.

quimicavatza, ça veca, ça vecapa, ça quinvalhuecapavia, in quinvalicavatza = shouted at them, just coming after them at a distance, shouting at them from afar (Mexico City, sixteenth century)
James Lockhart, We People Here: Nahuatl Accounts of the Conquest of Mexico, Repertorium Columbianum v. 1 (Los Angeles: UCLA Center for Medieval and Renaissance Studies, 1993), 168.

vmexti in imacpal çatepan quiquechvitecque veca vetzito in iquech = both of his hands were severed. Then they struck his neck; his head landed far away (Mexico City, sixteenth century)
James Lockhart, We People Here: Nahuatl Accounts of the Conquest of Mexico, Repertorium Columbianum v. 1 (Los Angeles: UCLA Center for Medieval and Renaissance Studies, 1993), 134.

high, tall; far away
Beyond the Codices, eds. Arthur J.O. Anderson, Frances Berdan, and James Lockhart (Los Angeles: UCLA Latin American Center, 1976), 29.