This is the 684th most frequent Russian word.
может
"Can," "may," or "perhaps."
Usage of 'может' here indicates possibility or permission.
Он может прийти завтра.
He may come tomorrow.
Usage of 'может' as part of a phrase to indicate uncertainty or speculation.
Может быть, это так.
Maybe it is so.
Usage of 'может' in its conjugated form 'можешь' to indicate ability or permission.