short for firewall, a network device/software to prevent intruders on your PC/MAC/network
net diagram |modem--fw--switch--pc|
by meathelmet September 01, 2005
Financial Winner, a term used when you've managed to make a saving on something, or better still got something for free.
I'm going to London on the weekend, train costs £7.50, but I can go by Megabus for £1.00 FW!!

I'm off to the gym for a shower, rather than using my own hot water, FW!!

Sorry it's cold in here, haven't had the heating on in years, FW!!
by Swindon July 13, 2007
Fuckin Whore.

Usually used by a female as a way of saying that she accepts the fact that she is abusing her hottness and taking advantage of multiple interested parties simultaneously and leading them on. This advantage taking can be emotionally, physically or monetarily. Similar to a player, but not necessarily a slut.
I'm such a FW
by HornyMooz January 09, 2010
contraction of forum whore. used primarily on steampowered
the l337357 of teh l337 are fw on steampowered.
by matthewr85 October 12, 2004

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