Here's what rhymes with octapole.
pole bowl poll toll dole bole boll tole dolour whole role soul coal goal hole roll sole fol mole patrol stole parole knoll shoal droll foal cajole thole troll vole kohl prole stroll unroll bedroll condole maypole skoal control scroll enroll systole casserole extol buttonhole petiole oriole cubbyhole extoll beanpole rissole innersole glycerol quadrupole vacuole arteriole decontrol pigeonhole camisole profiterole