The Jhana States
“Jhana” is just the word in Pali, the language that the Buddha spoke, for meditation. For modern Buddhists, it sort of means meditation on crack. There are eight jhana states, the first four, or material jhanas, and four immaterial jhanas.
They were very important to the Buddha. He talked about them a lot. It is easy to find information about them on the web. Here is one page with very broad overviews of the eight jhana states…