Equisetum hyemale equi·se·tum·hyemale uncommon noun 1. evergreen erect horsetail with rough-edged stems; formerly used for scouring utensils Synonymsscouring rushrough horsetailEquisetum hyemaleEquisetum hyemale robustumEquisetum robustum Related words Word family Equisetum hyemale robustum Broader terms horsetail WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
