Definitions
1.NounThe Irish Hobby, an extinct breed of horse.
2.NounA child's toy consisting of a (usually wooden or cloth) horse's head mounted on a stick.
3.NounA topic that elicits a prolonged and enthusiastic discussion from an individual."Don't ask him about global warming: it's his favourite hobby horse, you'll never get away."
4.NounA puppetlike costume used in some traditional dances and festivals that gives its wearer the appearance of a man on horseback.
5.NounAn early bicycle with no pedals or brakes.
6.VerbTo pitch back and forth.