it's an egyptian slang used to describe one of the following :

1 - emos
2 - mateela (egyptians who listen to a7x and slipknot and think they're metal know-it-alls. please not difference berween them and metalheads)
3 - mom's and pap's kids
4 - douchebags who think they're romeos and donjuan's

to give attention to something. can be used sexually, as in to give a woman a good seeing to e.g shag, or just to see to something that needs to be done

the sound an eyeball makes

Typically used by gay males, used when you see something out of the ordinary.

Aside from the obvious definition, to see somebody is to be going out with them - in old skool terms, to be going steady.

–noun.
a person able to ignore or deny certain realities, such as racism, sexism, classism, sexualism, ableism, or religious prejudice by virtue of the privilege associated with membership within a dominant group.

Simple Version: A person who just doesn't "get it".

Word Origin & History
A play on words, the pronunciation of “Not-See” invokes the word “Nazi”. The crimes of the former are passive instead of active – those who would turn a blind eye to injustice rather than perpetrating it themselves. The ideologies of both, however, are predicated upon a certain egocentrism, social privilege, and stark self-versus-other mentality.