There is no official information available about its title, so it has been given a fitting one.
Curling Stone is a combo ability Kirby gets by combining Stone with Ice, appearing in Kirby 64: The Crystal Shards. Kirby transforms into a curling stone, sliding around and bouncing off walls and freezing any enemy he touches. Kirby will eventually slow down after he has slid a long distance.
Curling Stone Transformation
Kirby becomes a curling stone and slides along the ground, freezing anything in his path, until B is pressed again. Kirby will slow down as he slides.