obby

noun3

1. •
   (informal) An obstacle course.

   • Obstacle games can have potential for massive visits if it is a great obby. — 2019
2. •
   (informal) Obsidian.

   • Capes ............. Obsidian (Obby) Capes, Spotted Capes, Spottier Capes. — 2007
3. •
   (informal, rare) A hobby horse.