Language /
Slang term for "pants" in Polish? Gacie. [32]
Your personal beliefs, I am sorry to say, are neither here nor there.
Beliefs, as discussed in other threads, cannot be questioned. It is a matter of Faith.
long, long time ago, there was an underwear producer called Gaciowski
More likely called Herr Gatke.
It must have been at least a 1000 years ago. In a time before factories and marketing
I doubt that.
the furry hindlegs of bears, insulation, feathery bird's legs
That seems unlikely
His production was so prolific that the word seeped into every corner of the Slavonic world - but nowhere beyond it, for some reason.
It only needs to be a small area for a usage to be revived or spread.