un·​der·​part ˈən-dər-ˌpärt How to pronounce underpart (audio)
: a part lying on the lower side (as of a bird or mammal)
: a subordinate or auxiliary part or role

Example Sentences

the bird's underparts were white
Recent Examples on the Web Calliope hummers have glossy green on the back and crown with white underparts. Joan Morris, The Mercury News, 26 July 2019 The adult brown pelican has gray underparts with brown hues, black-brown belly, yellow head and dark brown neck, silver-gray back and wings, with black feathers at the tips. Ernie Cowan, San Diego Union-Tribune, 13 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'underpart.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

First Known Use

1613, in the meaning defined at sense 1

Time Traveler
The first known use of underpart was in 1613

Dictionary Entries Near underpart

Cite this Entry

“Underpart.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/underpart. Accessed 1 Feb. 2023.

Kids Definition


un·​der·​part -ˌpärt How to pronounce underpart (audio)
: a part lying on the lower side (as of a bird or mammal)
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