Pay Station
A pay station is a player who rarely folds, so that he often calls with worse hands and loses money. The same type of player is a calling station.
The simple explanation
If you have a strong hand, a pay station will call your bets and pay you. He does not fold much.
A closer look
Against a pay station, value bet often and thinly, and do not bluff. He calls too much, so bluffs rarely work. He may win some pots with weak hands, but loses over time. The best response is patience and good starting hands.
A practical example
A player calls three streets with a pair of fours, and loses to the nuts. The others call him a pay station.
Full explanation
A pay station is a player who rarely folds, so that he often calls with worse hands and loses money. The same type of player is a calling station.
A pay station is a player who rarely folds.
He calls too much.
Value bet him and do not bluff.
He is the same as a calling station.