lin ‧ go /ˈlɪŋɡəʊ $ -ɡoʊ/ BrE AmE noun [countable usually singular] informal
[ Date: 1600-1700 ; Language: Provençal ; Origin: lingo 'tongue' or Portuguese lingoa , both from Latin lingua ]
1 . a language, especially a foreign one:
I’d like to go to Greece, but I don’t speak the lingo.
2 . words or expressions used only by a particular group of people, or at a particular period of time:
academic lingo