something curdled that appears in the urine, something stringy, or the bladder of an animal (see Molina)
Orthographic Variants:
axixicpacuitlatl
Alonso de Molina:
axixicpa cuitlatl. cosa quajada que parece en la orina, assi como hilazas, o la bexiga del animal. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 10r. col. 2. Thanks to Joe Campbell for providing the transcription.