1 definition by Chi Nou

Anything that refers to a previous generation of a subject/idea/object/etc. Typically, they are highly regarded and sometimes the very thing that started it all.
Guy: Damn, Super Mario Bros. The gameplay is old school.

Kid: These graphics suck. Where is the life meter?

Guy: What you say boy? *five across the eye*
by Chi Nou June 7, 2005
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