expression, noun
dream for the future; future aspiration
A set phrase used when talking about one's long-term goals or ideal future, often in contexts like career plans or personal ambitions.
私の将来の夢は医者になることです。
My dream for the future is to become a doctor.
子供の頃、将来の夢は宇宙飛行士だった。
When I was a child, my dream for the future was to be an astronaut.
目標 is a concrete 'goal' or 'target', often with a plan to achieve it. 将来の夢 is more about a cherished, idealistic vision of the future.
Compound of 将来 (future) + の (possessive particle) + 夢 (dream). A straightforward phrase with no unusual etymology.