Top definition
Officially, Women's Royal Naval Service, a sort of auxiliary RN for women that was brought in to relieve manpower shortages during the war. Also known as the Wrens.

Unofficially, for quite obvious reasons, Weekly Ration Naval Snatch.
I crave flange, when's that new WRNS arriving?
by Lord Grimcock May 08, 2009
Get a WRNS mug for your girlfriend Nathalie.