This is the 652nd most frequent Swedish word.
kört
"kört" (past participle of "köra"): "driven" or "run."
In this sentence, 'kört' is the past participle of the verb 'köra' (to drive), used in the present perfect tense.
Jag har kört bil hela dagen.
I have been driving a car all day.
Here, 'kört' is used in a figurative sense, meaning something is futile or a lost cause.
Det är redan kört, vi kommer inte hinna.
It's already over, we won't make it.
Again, 'kört' is the past participle of 'köra' (to drive), this time used in the past perfect tense in an indirect question.