something full of water, such as a sinking boat (see Molina)
IPAspelling:
ɑːteːnki
Alonso de Molina:
atenqui. cosa llena de agua, o anegada, assi como nao o barca. &c. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 7v. col. 2. Thanks to Joe Campbell for providing the transcription.