cleft palate
US /ˌkleft ˈpæl.ət/
UK /ˌkleft ˈpæl.ət/

1.
a congenital split in the roof of the mouth, often associated with a cleft lip, that can make speaking and eating difficult
:
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The baby was born with a cleft palate, which required surgery.
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Speech therapy can help individuals with a cleft palate improve their articulation.