Definition of “may” - Learner’s Dictionary

may

modal verb uk us /meɪ/
POSSIBLE

B1 used to talk about what is possibly true or will possibly happen:

There may be other problems that we don't know about.
I think I may have a cold.
PERMISSION formal

B1 used to ask or give permission:

May I be excused, please?
You may begin.
may (well) ... but

used to show that the first thing you say is not important when compared to another fact:

It may be cheap but it's not very good.

(Definition of “may modal verb” from the Cambridge Learner's Dictionary © Cambridge University Press)