a person who respects and likes only people who are of a high social class, and/or a person who has extremely high standards who is not satisfied by the things that ordinary people like

He's a terrible snob - if you haven't been to the right school he probably won't even speak to you. 他是个十足的势利眼——如果你没上过名牌学校，他也许一句话都不跟你说。

I'm a bit of a wine snob/a snob where wine is concerned. 我想我对葡萄酒有点挑剔。