harelip n a congenital cleft in the middle of the upper lip Usage(s) But Guignard, bubbling over and chattering through his harelip, either drank up or gave away everything he made. Turner spellbinds his listeners by recounting how he succeeded despite his harelip, his eighth-grade education and his early poverty. Contrary to strangely persistent legends (besides one that he is a woman) he is neither crippled nor blind, nor has he a harelip. Synonym(s) cleft lip cheiloschisis