The French version of an Italian "Espresso". Weaker, with more water. Often used mistakenly to describe the Italian version and is the target of arch wankers who like to express their superior "correctness".
How to correctly order such a coffee: "Un expresso s'il vous plaît"
Wanker: "It's ESPRESSO, not EXPRESSO"
Frenchman: "Voulez-vous votre café ou pas?"