Meatballs rhymes with:
basketball's, basketballs, fastballs, football's, footballs, softballs, spitball's, basketball's, basketballs, butterballs, eyeballs, fastballs, fireballs, football's, footballs, handballs, mothballs, oddballs, snowball's, snowballs, softballs, spaceballs, spitball's, trackballs
Meatballs sounds like:
mediplex, metabolic, metabolize, mothballs