garden sorrel gar·den·sor·rel uncommon noun 1. low perennial with small silvery-green ovate to hastate leaves SynonymsFrench sorrelgarden sorrelRumex scutatus 2. European sorrel with large slightly acidic sagittate leaves grown throughout north temperate zone for salad and spring greens Synonymssour dockgarden sorrelRumex acetosa Related words Broader terms dock Part of sorrelFrench sorrel WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.