What does enlightent mean?

"Enlightent" is not a standard English word. It's likely a misspelling of "enlighten", which means:

* To give someone greater knowledge or understanding: "The teacher's explanation enlightened the students on the subject."

* To inspire or stimulate someone intellectually or spiritually: "Reading that book enlightened her about different cultures."

* To illuminate: "The streetlights enlightened the dark alleyway."

If you meant something else, please provide more context or the full sentence you were trying to use.