2. Noun. A child's toy consisting of a (usually wooden or cloth) horse mounted on a stick. ¹
3. Noun. (figuratively) A topic about which someone loves to talk at great length. ¹
4. Noun. A puppet-like costume used in some traditional dances and festivals that gives its wearer the appearance of a man on horseback. ¹
5. Noun. An early bicycle with no pedals or brakes; a draisienne. ¹
¹ Source: wiktionary.com