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Definitions for "Underpart"
Keywords:  underneath, warbler, mouse, woodland, ventral
The underneath (ventral) side of a mammal (not the back or sides), as of a wood mouse with white underparts.
nsrl.ttu.edu
a part lying on the lower side or underneath an animal's body; "the warbler has a white throat and underparts"; "a woodland mouse with white underparts"
wordnet.princeton.edu
Keywords:  subordinate, part
A subordinate part.
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