X can be used to symbolise a lot of things. Sometimes it just means ‘cool new spelling’, but it also stands for the cross – both the cross of Christ, in Xmas, and ordinary crosses, as KGX, the railway abbreviation for London Kings Cross. We also use the X shape to vote and to mark things wrong.
I confess I can’t get this around to Paganism in any way. It’s been a busy few weeks, excuse me.