1. Often
indicative of emotional stress, temporary frustration, or, most likely, a
lull in casaul conversation.
2. Cute catch phrase used by alluring females.
3.
Primal animal sound made by Cro-Magnon-type males.
4. Found at the tail-end of Tig-grr.
"
Grr. Perhaps I should do something about
the couch being on fire."
"Man hungry. Need go hunt and kill feroocious beast. Grr!"
"Drank
too much beer. Must find spot to pee! Grr!"