Petrella rhymes with:
centrella, estrella, trela, trella, ventrella, barela, borella, cafarella, carella, centrella, chiarella, ciavarella, estrella, fiorella, grella, mazzarella, mirella, morella, muscarella, orela, panzarella, paparella, parella, parrella, pascarella, pasquarella, passarella, perrella, rella, tortorella, trela, trella, umbrella, ventrella, venturella, zarella, zarrella, zirella
Petrella sounds like:
patrol, pedroli, petralia, petrelli, petrilla, petrilli, petrillo, petrol, petrolia, powderly