This is the 5798th most frequent Dutch word.
olympique
"Olympique" is French, not Dutch, and it means "Olympic" in English.
Here, 'Olympique' is used as a proper noun to refer to a specific named stadium.
Het evenement werd gehouden in het stadion Olympique.
The event was held in the Olympique stadium.
In this context, 'olympique' functions as an adjective describing the type of training, implying they are related to the Olympics.
De atleten namen deel aan de olympique trainingen.
The athletes participated in olympique trainings.
Here, 'Olympique' is part of a proper noun referring to the name of a football club.