Poterium sanguisorba po·te·rium·sanguisorba uncommon noun 1. European garden herb with purple-tinged flowers and leaves that are sometimes used for salads Synonymssalad burnetburnet bloodwortpimpernelPoterium sanguisorba Related words Broader terms herb Parts Poterium Part of salad burnet WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.