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1.
A political and/or military person who's immorally eager to encourage a people or nation to go to war.

plural form

War Dogs
George W. Bush and Dick Cheney are total War Dogs.
by MikeKal July 25, 2009
 
2.
An extremely unattractive chick
Man, Paul got hammered yesterday and woke up next to this war dog.
by J. Dorton March 11, 2008
 
3.
A sexy bitch who everybody in the world loves! Is the fucking leetest pure in runescape. HE TOTATTLY PWNS ALL OTHERS!@!@!
...see pedofile
Did u just fucking see wardog own p0ke n die2 and purple 0wnz! OMFG HE RAPED MY CHILD -P0ke's mom
by X squeezy X March 10, 2008