Katwijk is a place on the west coast of the Dutch province of Zuid-Holland. To hear the pronounciation, go to
http://ilk.kub.nl/g2p-www-demo.html, choose 'dutch', fill in katwijk and listen to either sound files.
The meaning might be: the first part refering to a tribe called the Cananefaten or Catten and the second to the latin 'vicus' or settlement.
Thirza