Pony/ˈpəʊni/ Definition 1 of 3Pro Tip 1/3Kid's Delight The word 'pony' often appears in children's stories, symbolizing childhood dreams. Every child's bookshelf has a story involving a pony. Pro Tip 2/3Pet Description While 'pony' means a small horse, it's not just any small horse. Ponies are a specific size. Not all small horses are ponies; some are just young. Pro Tip 3/3Emotional Connotation 'Pony' can trigger nostalgic or sentimental feelings related to one's childhood. Seeing a pony ride at the fair brought back memories.