Pombo rhymes with:
mambo, palombo, archambault, archambeault, bimbo, colombo, columbo, cumbo, dumbo, gumbo, gumbo-limbo, jumbo, lembo, limbo, mambo, mumbo, palombo, palumbo, rambo, rambow, sambo, shambo, stumbo, tambo, trumbo, zambo
Pombo sounds like:
pamby, phaneuf, pimp, pohnpei, pomp, pompa, pompeo, pompey, pump