1 definition by materdeirules

Top Definition
A school in Santa Ana, California that is ridiculously good at sports. IT also provides a great education to those that want it. Also unlike that gay school called Sage Hill it does not cost 19 grand a year and there are not as many stuck up bitches that get escalades and porsches for their first cars.
Guy 1: We play Mater Dei at football tommorow
Guy 2: wow were boned
by materdeirules March 30, 2005

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