Fun Friday Fact: Should you choose to compose a couplet, or wonder to write a song lyric, concerning citrus fruit as your subject matter; be advised in advance:
Orange has almost no perfect rhymes. The only word in the 20-volume historical Oxford English Dictionary that rhymes with orange is sporange, a very rare alternative form of sporangium (a botanical term for a part of a fern or similar plant).
http://www.lexico.com