Samadhi represents a state of mind that is completely clear and free of delusion. There’s not really a good, simple translation for the word Samadhi, so I just prefer to use it. The Buddha experienced this kind of state when before he gave the teachings on impermanence and interconnectedness. It’s when the distracted and delusional thoughts in our mind are temporarily stilled and we have moments of clarity. It’s like part of the ocean where all the waves have stopped and the water is still. When the water is still, you can see very clearly what is beneath it. There are several ways the achieve this stilling of the mind, including meditation and yoga.
Reality is waiting just beneath our delusions. It’s there if you know how to look for it. Not the reality that we think is there. The real one.