Monoplane rhymes with:
airplane, biplane, floodplain, warplane, airplane, alleyne, badelain, biplane, bonvillain, chamberlayne, dunblane, floodplain, overlain, petrolane, warplane
Monoplane sounds like:
maybelline, mifflin, movieline
airplane, biplane, floodplain, warplane, airplane, alleyne, badelain, biplane, bonvillain, chamberlayne, dunblane, floodplain, overlain, petrolane, warplane
maybelline, mifflin, movieline