Deriving from a phonetic pronunciation of H.I.V. Dagorhiv is a term used to describe a sickness (generally mononucleosis or other STD) contracted from exchange of bodily fluids at a Dagorhir event. The illness can be spread through a number of means:
1)Mass sharing of drinking water
2)Blood-blood contact which resulted from battle wounds
3)Unprotected sex with a Dagawhore.
WartHog: Hey, man... why is Jari twitching like that? Did he forget his insulin again?
Blackhawk: Nah, he caught the Dagorhiv from some redhead in Mirkwood camp.