The word was coined around 1570. They say in either France, or possibly Czechoslovakia. The term described ANY GUN fired "in your hand".
I've heard revolvers referred to by old men from the time I was able to comprehend the English language, and also for the last 70+ years as "pistols".
Old gunmen were sometimes referred to as "pistoleros" in my part of the country.
But now we have "gun experts" that say: wheelguns are correctly called "revolvers", and "pistols" are single chambered in the barrel.
Well, political correctness be damned, I've got a 5 shooter, and a 6 shooter, and their both fired in the hand.
So both are pistols at my house.
What say you?