Keno n. : A gambling game, a variety of the game of lotto, played with balls or knobs, numbered, and cards also numbered.

Example:
Where can I play Keno online over the internet?

Taxonomy
keno, casino, ticket, wager, game, payouts, balls, lottery, keno ticket, keno game, computer, probability, paytable, edge, booth, races, two spots, spot game.

Defination from the web:
Keno is a lottery-like or bingo-like gambling game often played at modern casinos, and is also offered as a game in some state lotteries. A traditional live casino keno game uses a circular glass enclosure called a "bubble" containing 80 ping pong-like balls which determine the balldraw result. ...