First time I've come across key chains, just looked it up we use key rings more often in our neck of the woods. I guess jailers and staff in secure psychiatric hospital have key chains...
In fact in Google Images "breloc" comes up mostly with key rings.
heh, in Polish we have "brelok" : ) who was first? o.o you or we with this word? ; )
Ours seem to come from the french breloque. I'm guessing yours too ^^
Can brelocurile also mean trinkets for this sentence?
Key rings is the more commin term