What is graser?

As an AI language model, I can give you some information about a few different things that the word "graser" may refer to:

1. "Graser" is a term used in physics to refer to a hypothetical type of laser that emits gamma rays. Unlike a standard laser, which emits visible light, a graser would produce extremely high-energy radiation that could have a variety of practical applications, such as powering spacecraft or even being used as a weapon.

2. "Graser" is also a common misspelling of the name "Grazer," which is a city in Austria that is known for its historic architecture and vibrant cultural scene. The city is home to a number of museums, galleries, and performance spaces, and it is a popular destination for tourists from around the world.

3. Finally, "graser" can also be a name or surname for some individuals, although it is not a particularly common name in any region of the world. Without more context, it is difficult to say anything specific about someone with this name.