Principal English Translation:
to bake, roast, fry (i.e. to cook); or, to fire pottery (see Karttunen)
Lockhart’s Nahuatl as Written:
Class 1: ōniquixcac. 221
ixca = to bake, roast, fry (i.e. to cook)
James Lockhart, Nahuatl as Written: Lessons in Older Written Nahuatl, with Copious Examples and Texts (Stanford: Stanford University Press and UCLA Latin American Studies, 2001), 221.
Attestations from sources in English:
Niquixca tōtoltetl - I'm frying eggs (Ixca to fry)
Michel Launey, An Introduction to Classical Nahuatl, translated and adapted by Christopher MacKay (Cambridge: Cambridge University Press, 2011), 204.
Attestations from sources in Spanish:
tlaxcalli = tortilla; de ixca, cocer
Rémi Siméon, Diccionario de la lengua náhuatl o mexicana (Mexico: Siglo XXI, 1996), xxvii.