What is the meaning of Japanese plum?

noun

• Small tree of China and Japan bearing large yellow to red plums usually somewhat inferior to European plums in flavor.
  • synonyms: Prunus salicina
• Evergreen tree of warm regions having fuzzy yellow olive-sized fruit with a large free stone; native to China and Japan.
  • synonyms: loquat, loquat tree, Japanese medlar, Eriobotrya japonica
• Yellow olive-sized semitropical fruit with a large free stone and relatively little flesh; used for jellies.
  • synonyms: loquat