This is the 8168th most frequent French word.
vus
"Vus" is the past participle of "voir," meaning "seen."
Here, 'vus' is the past participle of the verb 'voir' (to see) in its plural masculine form, agreeing with the object 'les'.
Je les ai vus dans le parc hier.
I saw them in the park yesterday.
In this sentence, 'vus' is used as an adjective/past participle implying consideration or acknowledgment of the circumstances.
Vus les circonstances, il vaut mieux attendre.
Given the circumstances, it is better to wait.
Here, 'vus' functions as the past participle of 'voir' and is used in passive voice.