“Plum” has a few main meanings, depending on context:

Core meanings

  • A soft, sweet, round fruit with red or purple skin and a stone in the middle.
  • The tree that produces this fruit.
  • A dark reddish‑purple color, often used in fashion and design.

Figurative and slang uses

  • Something very desirable or high‑status, especially a job or position, as in “a plum job” or “a plum role.”
  • In some UK and internet slang, calling someone “a plum” can mean they are being an idiot or fool (mildly insulting and usually informal).
  • In older or niche slang, “plums” can refer to testicles; this is vulgar and context‑dependent.

How to tell which meaning is meant

  • If it’s about food or trees, it’s the fruit/tree.
  • If it’s paired with “job,” “role,” “assignment,” or “deal,” it means “very desirable.”
  • If someone says “you plum” to a person, especially in casual British English, it usually means “you fool/idiot,” often playfully.
  • If it describes a color (plum dress, plum lipstick), it’s the dark red‑purple shade.

In most everyday situations, you’ll either see “plum” as the fruit or as a way to say something is especially good, like a plum opportunity.

Information gathered from public forums or data available on the internet and portrayed here.