Orioles' rhymes with:
orioles, orioles, orioles, bankrolls, blowholes, bubolz, buttonholes, charcoals, flagpoles, foxholes, fumaroles, keyholes, krumholz, loopholes, metropol's, monopoles, orioles, payrolls, petroles, pinholes, postholes, potholes, redpolls, seminoles, superbowl's, superbowls, tadpoles, windholz
Orioles' sounds like:
oarlock, orioles, orlich, orlick, orloski, orloski's, orlosky, orlosky's, orlowski, orlowski's, orwell's