"Rawr" can be many things, depending on who uses them. But it usually mean one of three things.
1. Angry or annoyed
2. A response to an insult of some sort
3. A Phrase said before pouncing on someone
<Red> Yay! I win you lose! blablablabla.....
<Blu> ....Rawr
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<Red> Blu, your cloths are all.....blue
<Blu> Yeah? well........rawr
You have just put two quarters into a sticker vendor. You push in the lever and out pops a very cute sticker with a cartoon lion on it. There is a caption there that reads "Rawr means I love you, in Lion."
a word that can mean almost anything. there are multiple meanings:
1. dinosaur for "I love you"
2. Extreme emotional representation. Something that is hard to say how you are feeling
3. can mean to want someone or something really bad.