Mow down/ Mow over
Meanings of "Mow down/ Mow over"
Figuratively; 1. to knock down something or someone completely and without hesitation/reservation. One can also say 'run over'.
2. Us automatic or high volume munitions weapons to slay or destroy living or inanimate things. Vehicles can be used as a weapon or unintentionally to achieve the same.
Literally; To cut the grass or vegetation with a mower, tractor, or other cutting device.