This is the 823rd most frequent Dutch word.
droom
Dream.
Here, "droom" is used as a noun, referring to the concept of a dream experienced during sleep.
De droom die ik vannacht had was bijzonder levendig.
The dream I had last night was particularly vivid.
In this sentence, "droomt" is the verb form of "droom," meaning to aspire or hope for something passionately.
Hij droomt ervan om ooit een beroemde kunstenaar te worden.
He dreams of becoming a famous artist one day.
This usage sees "droom" as a noun used metaphorically to describe something exceptionally wonderful or ideal.