Top definition
An american made heavyass tank.

This heavy tank was in service 54-74, Yep, it is old as hell.
Person 1: LOOK AT THAT TANK!!!!
Person 2: That tank is an M103
Person 1: Shut-up.
Person 3: OOPS Wrong definition!
via giphy
by Mrorange33 September 03, 2016
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