Noun, : the underbody of a tank.    From Dictionary.com. 

The optional Super Fuel Economy Package offers additional aerodynamic details such as underbody shields and blockers on the lower grille.    From Wordnik.com.  [Recently Uploaded Slideshows] Reference

With 400-watt sound systems and underbody lighting, no less.    From Wordnik.com.  [Amazon Got Tanks] Reference

In some cars, he says, testing the underbody can take a year.    From Wordnik.com.  [Electro-Shock Therapy] Reference

Includes head/tail and turn signal lights, trim and underbody lighting.    From Wordnik.com.  [Own Your Own Personal Tank | Impact Lab] Reference

Oba made a slit in the pale underbody, in the fold between rows of scales.    From Wordnik.com.  [The Pillars of Creation]

Continue wrapping the copper wire forward to the end of the thread underbody.    From Wordnik.com.  [How To Tie The Hottest Fly In The World] Reference

Tie the wire off at the front edge of the underbody with two tight turns of thread.    From Wordnik.com.  [How To Tie The Hottest Fly In The World] Reference

There was a jagged hole in the underbody of the balloon, from which gas was rushing.    From Wordnik.com.  [The Boy Inventors' Radio Telephone] Reference

The tires thrummed up the incline, spinning loose concrete against the cars underbody.    From Wordnik.com.  [Gold of Kings] Reference

Aerodynamically, the Agera features a flat underbody with Venturi tunnels at rear of chassis/body.    From Wordnik.com.  [Exclusive: Koenigsegg Agera - GTSPIRIT.COM] Reference

You must groom your dog's whole body including the legs, tail and underbody if you want to do it right.    From Wordnik.com.  [We're All Iraqis Now] Reference

You must groom your pets whole body including the legs, tail, and underbody if you want to do it right.    From Wordnik.com.  [Media Ghouls and a Defender of Juries] Reference

Imported cars are checked to make sure there's no soil on the underbody that could harbor pests or diseases.    From Wordnik.com.  [Going abroad? Avoid bringing back unintended souvenirs.] Reference

Machine washing, brushless hand washing, underbody steam cleaning, three-stage waxing, full service detailing.    From Wordnik.com.  [Bad Luck and Trouble]

Then the wolf made a leap, and I saw his light-gray underbody right over my head as he flashed after poor Bozie.    From Wordnik.com.  [The Girl from Sunset Ranch Or, Alone in a Great City] Reference

The crowd noise breaks above them, a chambered voice rolling through the hollows in the underbody of the stadium.    From Wordnik.com.  [Underworld] Reference

The braking bag, installed between the front axle and the underbody, works just like the airbag in a steering wheel.    From Wordnik.com.  [Wired Top Stories] Reference

Her head was capped with feathers the color of slate and her white throat and underbody were marked with darker bars.    From Wordnik.com.  [Through Wolfs Eyes] Reference

He also created underbody ground effect cars with the Lotus 78 and 79 and introduced mid-engined cars to the Indy 500.    From Wordnik.com.  [Wired Top Stories] Reference

Cut a length of copper wire about 6 or 8 inches long and tie it in at the front of the thread underbody on top of the hook.    From Wordnik.com.  [How To Tie The Hottest Fly In The World] Reference

The smell of ozone flashed through the damp air as sparks erupted from the hood, roof, sides, back, and underbody of the 4X4.    From Wordnik.com.  [The Mocking Program]

Chrysler and Alfa Romeo are to share a Fiat-engineered underbody.    From Wordnik.com.  [Freep.com - RSS] Reference

Easily wash and rinse the paws, underbody, and other hard-to-reach areas.    From Wordnik.com.  [The Green Head - Finds Cool New Stuff!] Reference

If it's underbody rust, that is a more serious issue as dellaroux points out.    From Wordnik.com.  [Wired Campus] Reference

Bodywork: Carbon Fibre or Glass Fibre. 3 piece upper & full underbody diffuser.    From Wordnik.com.  [Autoblog] Reference

This solution makes the previous, additional underbody catalytic converters unnecessary.    From Wordnik.com.  [eMercedesBenz] Reference

A front air dam, lower ride height, and underbody pans minimize underbody drag beneath the.    From Wordnik.com.  [Reliable Plant Home Page] Reference

We especially like the cockpit-like greenhouse and the P-51 Mustang-inspired underbody flaring.    From Wordnik.com.  [Autoblog Green] Reference

The long wheelbase of 3200 mm provides the necessary underbody space for the traction batteries.    From Wordnik.com.  [Automotive Headlines] Reference

• A lower front air dam extension, extensive use of underbody panels and a rear spoiler enhance aerodynamics.    From Wordnik.com.  [Autoblog Green] Reference

The aerodynamic underbody largely covers the underbody, protecting it and creating favorable aerodynamic air flow.    From Wordnik.com.  [Autoblog Green] Reference

The entire body has been optimized - from the rear spoiler, including the spoiler edges, to the underbody and the wheels.    From Wordnik.com.  [Autoblog Green] Reference

The latter is mostly used in the longitudinal member of the underbody, and front and center pillars in the side body structure.    From Wordnik.com.  [Automotive Headlines] Reference

The result is ZDX to see if the brakes, suspension, wheels and other underbody bits cope with the added weight and limited movement.    From Wordnik.com.  [Autoblog] Reference