Top Definition
The annual outdoor concert held each year by Washington D.C. radio station 99.1 WHFS. Many popular rock, punk and alternative bands play, aswell as locals and underground favorites.
Dude, I can't wait to see The Offspring play HFStival this year!
by Katie B. April 12, 2004
An alternative rock concert usually held sometime around Memorial Day in Washington D.C. Most recently has been help at RFK stadium in D.C., but has been held elsewhere.
yeah I saw them play at hfs last year
by sebadoh May 13, 2004
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