underbody

[ uhn-der-bod-ee ]

/ ˈʌn dərˌbɒd i /

the bottom or underneath part, as of a mechanism or animal: the underbody of a tank.

Nautical. the portion of a hull that is normally underwater.

Origin of underbody

First recorded in 1615–25; under- + body

There was a jagged hole in the underbody of the balloon, from which gas was rushing.

The Boy Inventors' Radio Telephone |Richard Bonner
"The whole of the underbody of the outer envelope is watertight," he remarked.

The Dreadnought of the Air |Percy F. Westerman
The green sea-growth on her underbody fans and waves in the tide, showing long voyaging in the crust and stage of it.

Merchantmen-at-Arms |David W. Bone
If it is a circular hole in a dress or underbody, as often happens, under the arms, we will use the square patch.

The Library of Work and Play: Needlecraft |Effie Archer Archer

Up fly the liner's hissing slings; her underbody crashes home and she hurtles away again.

With The Night Mail |Rudyard Kipling

underbody

/ (ˈʌndəˌbɒdɪ) /

the underpart of a body, as of an animal or motor vehicle