a mound (see Karttunen), or a hill
POTZAL-LI mound / terrero (K) This is attested as an element of ĀZCAPÓTZAL-LI 'ant hill' and the place name ĀZCA-PŌTZALCO. See PŌTZ(A). Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 204.