What's "Cor" mean

[Catlady (Rita Prince Winston)]

--- In HPFGU-OTChatter at yahoogroups.com, Sharon Hayes <s.hayes at ...> wrote:
>
> We call ex-pats "Poms" which has something to do with Pomeranian--not
> the dog type, but something to do with the military I believe? if 
> anyone knows where that terms originates I would be most grateful.
>
I always heard that it was 'pommies' and meant 'Prisoners Of Mother
England'. I have no idea why it would mean that.