Generally it means "A ball even with the pin but off to one side." some folks get more specific and say "a ball that is at the same distance from the tee as the hole, but off to one side." But most would say that the ball is pin high if it lands in that position from the shot that got it on the green no matter where the shot was made from. In other words your shot was long enough but your aim was off. You picked the right club for the shot and the right amount of power but your stance or swing direction wasn't in line with the pin. The ball stopped even with the pin but some distance off to the side at a right angle to the line from the lie to the pin. Which means you actually hit it just a tad too far as Pythagoras will tell you that the angle is longer than the direct line to the pin. ( Not many people know that Ol' Pie as he was known on the ancient circuit was quite the duffer. Golf was a lot simpler back then, having not yet been invented.) Pin high has nothing to do with the slope of the green and the balls lie in relation to the hole on the slope. That relationship is usually refered to as up slope or down slope. But... some people will just say up or down while some use up and down refering to the lie in relationship to being pin high. They shouldn't do that, they should say long or short and wide to the left or right. Some people say hole high instead of pin high. That's confusing, how can you be as high as a hole? If a hole was high, that is went up instead of down, it would be a column or pillar. Or mebbee just a post on your lower class courses. Now that would be an interesting game, you'd have to hit the ball with extreme accuracy and control so that it would land and stay right on top that lil pillar. The post in one would be very rare.