royal houses or palaces of great lords (see Molina)
Orthographic Variants:
uei tecpancalli, huey tecpancalli
Alonso de Molina:
uei tecpancalli. casas o palacios reales y de grandes señores. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 155v. col. 2. Thanks to Joe Campbell for providing the transcription.