having tightly curled or frizzy hair on the forehead (see Molina)
Orthographic Variants:
ixquaillacatztic
Alonso de Molina:
ixquaillacatztic. el de cabellos crespos en la frente. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 47r. col. 1. Thanks to Joe Campbell for providing the transcription.