What does JACKY mean?

Here is the requested information on "jacky": 1. Parts of Speech: Noun 2. Definitions: (1) a small, sturdy, and agile horse; (2) a sailor or seaman; (3) a nickname for someone named Jack or Jacqueline 3. Pronunciations: (US) /ˈdʒæki/; (UK) /ˈdʒæki/ 4. Origin and Usage: (1) The word "jacky" as a noun meaning a small horse is derived from the name "Jack," which was a common name for a horse in medieval times. The word was first recorded in the 16th century. (2) As a slang term for a sailor or seaman, "jacky" is thought to have originated in the 18th century and is possibly related to the use of "jack" to refer to a flag flown from a ship. (3) As a nickname for someone named Jack or Jacqueline, "jacky" has been in use since at least the 19th century. 5. Synonyms: (1) pony, cob, nag; (2) seafarer, mariner, sailor; (3) Jack, Jackie 6. Related Words: jacks, jacko, jacky 7. Example Sentences: - The children loved riding the jacky at the petting zoo. - The old sailor told tales of his adventures on the high seas with other jackies. - Jacky was excited to meet the new student with the same name as her.