bra ‧ vo /ˈbrɑːvəʊ, brɑːˈvəʊ $ -voʊ/ BrE AmE interjection
[ Date: 1700-1800 ; Language: French ; Origin: Italian , from bravo (adjective); ⇨ ↑ brave 1 ]
used to show your approval when someone, especially a performer, has done something very well:
Bravo! Encore!