Espresso is defined as a type of coffee that is brewed with steam using a special machine.(noun)
The strong coffee added to a cappuccino is an example of espresso.
See espresso in Webster's New World College Dictionary
noun pl. espressos
Origin: It (caffè) espresso, pressed-out (coffee), pp. of esprimere, to press out, express < L exprimere: see express
See espresso in American Heritage Dictionary 4
noun pl. es·pres·sos also ex·pres·sos
Origin: Italian (caffè) espresso, espresso (coffee)
Origin: , past participle of esprimere, to press out
Origin: , from Latin exprimere
Origin: : ex-, ex-
Origin: + premere, to press; see per-4 in Indo-European roots.
Learn more about espresso