This is the 15472nd most frequent German word.
verunglückten
"Verunglückten" means "people who had an accident" or "the injured/accident victims."
In this sentence, 'Verunglückten' is used as a plural noun referring to individuals who have been involved in an accident.
Das Auto der Verunglückten wurde abgeschleppt.
The car of the accident victims was towed away.
Here, 'verunglückte' is used as an adjective modifying 'Radfahrer', indicating that this specific cyclist was involved in an accident.
Der verunglückte Radfahrer wurde ins Krankenhaus gebracht.
The cyclist who had an accident was taken to the hospital.
In this sentence, 'verunglückte' serves as a verb in the past tense, describing the action of someone having an accident.