to crave something, savoring and swallowing my saliva, or to make one's mouth water (see Molina)
IPAspelling:
istɬɑki
Alonso de Molina:
iztlaqui. nic. (pret. oniquiztlac.) antojarseme alguna cosa comestible, tragando la saliva, o haziendo se me agua la boca. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 49v. col. 2. Thanks to Joe Campbell for providing the transcription.