Dorsen means to thresh. The person doing the threshing is the dorser. You will not often find that as an occupation as it was just one of many jobs farms or their laborers did.
Dutch term – Dorsen
Yvette Hoitink, CG® is a professional genealogist in the Netherlands. She holds the Certified Genealogist credential from the Board for Certification of Genealogists and has a post-graduate certificate in Family and Local History from the University of Dundee. She has been doing genealogy for over 30 years and helps people from across the world find their ancestors in the Netherlands. Read about Yvette's professional genealogy services.