ærslabelgur

Icelandic

A jumping pillow

Etymology

From ærsl +‎ belgur.

The second sense is a somewhat humorous reinterpretation of the first sense, meaning "a large bag for romping around".

Noun

ærslabelgur m

1. a child who is very playful and full of energy
2. a jumping pillow, a bouncy pillow (a large inflatable piece of playground equipment on which children jump)