Castellucci rhymes with:
angelucci, bellucci, cellucci, melucci, vellucci, angelucci, baluchi, bartolucci, bellucci, bertolucci, carlucci, cellucci, colucci, gallucci, lucci, melucci, paolucci, vellucci
Castellucci sounds like:
cadillac, cadillac's, cadillacs, castelluccio, castilleja, castle's, castles, catalog, catalogs, catalogue, catalogues, catalyze, catholic, catholics, catlike, catolica, cattolica, catwalk, citadel's, coastal's, coattails, cocktails, codelco, costales, costello's, cutlass, cytology