fnx 

short for thank you as in thanks

person1: i dun it 4 u
person2: aww fnx

fnx by sam!! xx August 16, 2006

FNX 

The best radio station in Boston. Period.

FNX really is the "true alterntative"

FNX by AutisticPsycho December 5, 2004

FNX 

To be terribly bad and usually in last place, much like WFNX in Boston, MA.

"Dude, you were FNX in that last race you ran. What... someone chop your ankles off?"

FNX by Bart June 17, 2003

fnx 

Fucking X-Wife.

Best used as text short hand.

My fnx is such a crack whore!

fnx by upgray_edd February 7, 2010

FNX 45 Tactical

A Badass .45 that comes with 3 15 round magazines, has a threaded barrel, night sights, 5.3 inch stainless barrel and slide and is already made to mount a Red dot on it's slide. It is the only pistol that can have its internal frame rails replaced. It is dead nuts accurate, ask a Foo.
it replaces the FNP that sucked for various reasons.

my FNX 45 Tactical is better than your Glock

FNX 45 Tactical by The Prickist AKA Mrrick October 7, 2013

fnxoopy

adj. Fun and exciting; cool.

The concert was fnxoopy.

fnxoopy by poopyhead November 16, 2004

fnxdynamic 

the definition of hot designs

fnxdynamic is legit a god

fnxdynamic by qthails November 18, 2019