Portico rhymes with:
abaco, calico, ivaco, mexico, monaco, new-mexico, warnaco, abaco, aeromexico, agco, agnico, armco, atico, barinco, calico, chico, coco, d'amico, flamenco, glasgow, guanaco, homedco, hurco, interco, ivaco, jericho, jerrico, kinko, larco, lifeco, litco, medico, mexico, miyako, monaco, moscow, new-mexico, politico, primeco, rococo, servico, simcoe, tobacco, unesco, warnaco, watsco, woolco, zydeco
Portico sounds like:
parades, paradis, paradise, paradiso, paradowski, paradox, paradoxes, pardus, paredes, paredez, paredis, parities, parodies, parretti's, parrots, part's, partake, partch, parties, parties', parts, parts', party's, partyka, pavarotti's, pepperidge, peratis, peratis', peretz, period's, periodic, periods, perot's, perots, peroutka, pertschuk, pertussis, pirate's, pirates, pirouettes, porridge, port's, portage, portec, portec's, porteous, portis, ports, portuguese, portz, pradesh, prats, pratt's, predaceous, predates, pretax, pretties, prideaux, prides, priorities, prioritize, prioritizes, pritts, pritz, prodi's, prodigies, prodigious, prodigy, prodigy's, prods, produc, produce, produces, protease, protege, proteges, protozoa, protz, prudish