hobby horse

Meanings

1. The Irish Hobby, an extinct breed of horse.
2. A child's toy consisting of a (usually wooden or cloth) horse's head mounted on a stick.
3. A topic that elicits a prolonged and enthusiastic discussion from an individual.
4. A puppetlike costume used in some traditional dances and festivals that gives its wearer the appearance of a man on horseback.
5. An early bicycle with no pedals or brakes.

1. To pitch back and forth.