View All Poker Terms. A shark  is a highly skilled poker player. Don't play in that cash game, it's full of sharks.  Weaker players are often referred to as donkeys  or fish. 

Their exact operation depends on local law: many VLTs are stand-alone devices containing a random number generator. Each terminal is connected to a centralized computer system that allows the lottery jurisdiction to monitor gameplay and collect its share of revenue. The outcome of each wager on a VLT is random.