In poker terminology, there's something called "checking behind". What does this mean?
It's when you 'check' (choose not to bet anything) after all players before you have checked. Often with a good hand you'll want to do this to give your opponent(s) an opportunity to improve and be willing to bet. With a weak hand you might want to do this if you suspect your opponent is slow-playing a good hand for the same reason.
Checking behind is when you are last to act, and you check.