underpart

/ˈʌndərˌpɑrt/
noun
  1. The lower or underside of something, especially an animal or object.
    • He examined the underpart of the table to check for damage.
    • The underpart of the car was covered in mud after driving on the dirt road.
    • The bird's underpart is white, while its back is dark brown.
Antonyms
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