John Montgomery discusses the Maya glyphs k’u-xa-ja and k-u-xa-ji-ya, both referring to "cannibalism."
John Montgomery, Dictionary of Maya Hieroglyphics (New York: Hippocrene Books, Inc., 2002), 156
k’u-xa-ja (k’uxaj) (t603:114.81) 1 pass. v. “was eaten” 2 pass. v. “was ground” 3 pass. v. “was hurt” Accompanies representations of captives and may refer to “torture” or “cannibalism”
k-u-xa-ji-ya (k’uxajiy) (t604:136.114:126v) 1 tr. com. V. “ate” 2 tr v. “to grind” 3 tr. v. “to hurt” Accompanies representations of captives and may refer to “torture” or “cannibalism”