I guess a min current consumption provided by a bleeding resistor beyond the actual load that has to supply the voltage for....if the load is purely capacitive then you need a min load current in order to bias the regulator...

Regards
Tosei

It is the minimum current going out thru the pass transistor with external current load set to zero, while still maintaining a stable system.

This can be internally set (thru a load) or externally required (it varies with the design)

Not to be confused with the ground pin current - wich is all the current to run the internal LDO circuits (bandgap and feeddback control system typically)

Mind you, I dont think there is an ISO or IEEE standard definition here so a vendor may define this a little differently.