a feeling of being light-headed, or the state of having a headache (see Molina)
Orthographic Variants:
quaiuintiliztli, quaihuintiliztli
Alonso de Molina:
quaiuintiliztli. desuanecimiento tal. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 84r. col. 2. Thanks to Joe Campbell for providing the transcription.