What is a bistrot or a bistro?

The origins of the word is Russian. Bistro - quickly. Used by Russian soldiers during Napoleon war.

Little Saint, there are several places in Paris that call themselves Bistrot. Bistrot de Paris & Bistrot Paul Bert are two examples.

Player #18663768, tell that to Café de Flore & Les Deux Magots!

Player Say what!?, a café does not really serve food!

It's a cafe' with a fancy name so they can charge more.