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1.
A person of small stature with a high energy level, who is willing to be obnoxious in displaying that high energy level.
Rachel Ray is the poster child of mighty mite nation.
by Atowntommy August 28, 2007
 
2.
A semi-amphibious American Military ¼-ton 4x4 tactical vehicle designated M422-A1 by the US Marine Corp. It is made of aluminum over a steel frame truck, suitable for airlifting and popular during the 1960's.

The Mighty Mite remains a rare vehicle today as collectors particularly like its independent suspension all around (front: leading arms/trailing arms rear), sprung ¼-elliptical leaf springs. Among the M422's many other unique features are front and rear Posi-Traction differentials, inboard differential mounted drum brakes, center-point steering and the aluminum V4 engine developed by American Motors. The air-cooled 108 cu in (1.8 L) developed 52 bhp (39 kW) and 90 lb·ft (122 N·m) of torque, which propelled it to a top speed of 65 miles per hour (108 km/h), with a 55-mile-per-hour (89 km/h) military rating.
Bob sold his old Willy's Jeep when he found a Mighty Mite to restore.
by reptilesPhilly September 04, 2012