underpart

American  

[uhn-der-pahrt] / ˈʌn dərˌpɑrt /

noun

1. the lower part or side.

   The underpart of the plane's fuselage scraped the treetops.

2. an auxiliary or secondary part or role.

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Etymology

Origin of underpart

First recorded in 1655–65; under- + part

Example Sentences

The kitchen seemed full of the presence of the long-dead woman whom Tony was still grieving for in some underpart of his mind.

From A Poor Man's House by Reynolds, Stephen Sydney

The breast, belly, and underpart of the wings of this noddy were white; and the back and upper part of its wings of a faint black or smoke colour.

From A Voyage to New Holland by Dampier, William

Luckily I've got my name and address scratched on the underpart of the frame, if the finder only takes the trouble to look.

From The Aeroplane Boys on the Wing Aeroplane Chums in the Tropics by Langworthy, John Luther

Seizing opportunity and larva at the same time, the wasp stood high on its legs and pulled the worm's front end from the ground, exposing the yellowed band of the underpart.

From They Twinkled Like Jewels by Farmer, Philip José

A deep shining plumbeous black on the upper part, becoming paler near the belly, which from the underpart of the jaw to the perineum is ashy-grey, with irregular spots and blotches.

From Natural History of the Mammalia of India and Ceylon by Sterndale, Robert Armitage