PITZOĀ vt to kiss someone or something / lo besa (T) [(3)Tp.198,(3)Xp.72] This seems to have to do with extending or puckering the lips. See PITZĀHU(A).
PITZALHUIĀ applic. PITZOĀ. Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 198.