noun
a congenital cleft in the upper lip that often extends into the nostril
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The surgeon performed a successful repair surgery on the baby born with a harelip.
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I heard that Sarah's cousin was born with a harelip, but she's getting surgery to fix it.
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Some people used to call him 'harelip' in school, but he never let it bother him.
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The divide between the two political parties was like a harelip, seemingly impossible to bridge.