Thread: What exactly is a MOA rifle??

I know this might seem like a silly question but here goes anyway. At what point can you call you rifle a MOA rifle?

The reason I'm asking this is more out of curiosity thing more than anything else because every rifle I see listed on Tard Me or anywhere else seems to shoot MOA according to it's owner.
Now what triggered this was I've just done that "accuracy test" thread test with a couple of rifles and on any given day (weather permitting) I'd be confident enough that i would be able to reproduce those results...However this picture is from when I was testing my CZ 452 with different ammo etc earlier this year.

Now this is pretty darn good shooting for a 22lr BUT even though this rifle/ammo combo managed to do 4 groups like this, it sure as sh!t wont do it all the time.
This is a more typical 4x 5shot group that it produces.

As you can see it doesn't always produce MOA groups.

So I guess my question is can you call a rifle a MOA rifle if it produces 1 MOA 3 shot group, 1 MOA 5 shot group, 4 or 5 MOA groups one after the other or do you take it to the extreme and say only if you can constantly produce MOA groups with no POI change??