This is the 461st most frequent Dutch word.
kennen
"To know" (be familiar with).
In this sentence, 'ken' means 'to know' in the sense of being familiar with something.
Ik ken deze stad goed omdat ik hier ben opgegroeid.
I know this city well because I grew up here.
In this sentence, 'ken' is used to ask if someone is familiar with or recognizes another person.
Ken jij de nieuwe collega die vandaag is begonnen?
Do you know the new colleague who started today?
Here, 'kennen' expresses being acquainted or having a relational knowledge with someone over time.