Definition och Betydelse av "plum job"

What is the origin of the idiom "plum job" and when to use it?

The term "plum job" is thought to have originated in the 19th century, when plums were considered to be a particularly delicious and expensive fruit. In the early 1800s, plums were often used as a symbol of wealth and status. The term "plum job" is used to describe a job that is well-paid and desirable.