I think the definition of weight should be clear.
Not as clear as you'd think.
From Wiki:-
The ISO standard ISO 31-3 (1992) defines weight as follows:
The weight of a body in a specified reference system is that force which, when applied to the body, would give it an acceleration equal to the local acceleration of free fall in that reference system.[9]
Note that it does not specify an inertial frame of reference.
If you are using a NON-inertial frame of reference- such as an aircraft undergoing an acceleration- your weight will be greater than your mass.
I actually want to renew my dis-agreement with Checkboard and Captain Pit Bull on this point- by the ISO definition weight is not defined soley as force due to gravitational pull from a mass- or rather, the force felt due to acceleration IS force due to gravity, and force due to gravity IS force due to acceleration- they are actually the same thing. As I said previouly, there is no experiment that would allow you to differentiate between the two.