This is the 674th most frequent Italian word.
espresso
A strong coffee made by forcing hot water through finely-ground coffee beans.
'Espresso' here refers to the well-known coffee beverage prepared by forcing hot water through finely-ground coffee.
Ho ordinato un espresso al bar.
I ordered an espresso at the café.
'Espresso' is used as the past participle of the verb 'esprimere' (to express), indicating something has been conveyed or articulated.
Il messaggio è stato espresso chiaramente.
The message was clearly expressed.
'Espresso' functions as an adjective describing a fast train, denoting it makes fewer stops and emphasizes speed.