Maximum ramp weight

The heaviest weight to which an aircraft can be loaded while it is sitting on the ground, sometimes referred to as the maximum taxi weight.

Aviation Maintenance Technician Handbook — General, p. G-7

Also defined in 2 more sources

(GAMA) The maximum weight approved for ground maneuver. It includes weight of start, taxi, and runup fuel.

Aircraft Weight and Balance Handbook, p. G-3

The total weight of a loaded aircraft, including all fuel. It is greater than the takeoff weight due to the fuel that will be burned during the taxi and runup operations. Ramp weight may also be referred to as taxi weight.

Pilot's Handbook of Aeronautical Knowledge, p. G-19