Tour : nf fam. Together of consumption offered by someone, coffee.
Pay / offer a tour: pay everyone a drink.
Glass offered on the counter du coffee or bistro.
It's my turn : it's up to me to pay or offer a drink.
It's the boss's tour : the boss pays.
En Belgium, a drache is a tour (coming from Dragon, pouring rain).
Vitriol tour: tour ofcalvados.
Make the tour of the Grand Dukes: make the Party, fair, nouba during night (see below the origin of this expression).
Volley of blows, blows received or given.
Paying a round: beating, hitting.
The expression “Making the tour of the Grand Dukes”: A luxurious, expensive outing.
At the end of the XNUMXth century, attracted by the attraction of Paris, the City of Light which had just been "refigured" by Baron Haussmann and made clean thanks to the decree of the prefect Eugène Poubelle, the princes of the Russian imperial family – called Grand Dukes – idle, but rich and travellers, came regularly on a spree in the capital where they went from cabaret to cabaret from show to show, from place of pleasure to place of pleasure, spending lavishly.
It is quite simply from these long and expensive nocturnal trips that this expression was born.
That said, one cannot help but think that the choice of the term grand duke (*), instead of prince or tsar, for example, could have been influenced by the nocturnal bird, due both to its port haughty and the fact that, to find his sustenance, the Grand Duke can make very long nocturnal trips.
(*) The eagle owls are owls hunt the night (see Night Bird).
– Quote from the American writer John Fante (1909-1983): “I had another beer and then another. He gave me the fourth as a gift and I paid for the next round. An hour like that we bottle-fed.” in the novel Ask the Dust (ask the dust) (1939).