pony
Word family
- ponytailnounB1
Synonym discussion
Sense: noun/1
"Pony" is used for a horse that belongs to a small breed, so it may be fully grown and still be called a pony. "Horse" is the broad everyday word and does not tell you anything about size. "Foal" means a baby horse, so it is about age, not breed. "Miniature horse" is more specific and is often used for especially small animals that are not simply called ponies. "Colt" means a young male horse. Say "The children rode ponies at the farm," but "The foal stayed close to its mother in the field."
Etymology
The word probably came into English through French forms related to a word for a young horse. Those forms may go back to Latin words for a young animal. In English, the meaning settled on a horse that stays small even when grown.