Heidrun is a girl name and is the name of a goat in Norse mythology, eating on the roof.
You can also find Heidrun oil-field in the Norwegian Sea. Hence Norwegians use a lot of names from Norse mythology.

There are about 150 Heidrun's in Norway.
Heidrun is also a brand name on plastic storage boxes

Also, the few Heidrun's seen are very beautiful and intelligent. And most likely they have great parents naming after Norse mytholgy.

A term used to reference cannabis/marijuana/weed.

Heiðrún is the coolest and baddest bitch in the world. She is too good for everyone. She’s the hottest girl you have ever seen.