teaxca. cosa agena. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 91v. col. 1. Thanks to Joe Campbell for providing the transcription.
Frances Karttunen:
TĒĀXCĀ something belonging to another / cosa ajena (M) [(2)Cf.13r,58r,(4)Zp.8,101,219]. This is conventionally paired with TĒTLATQUI, the whole phrase meaning 'someone else's property.' See ĀXCĀ(I)-TL. Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 215.