false sarsaparilla fal·se·sar·saparilla uncommon noun 1. common perennial herb having aromatic roots used as a substitute for sarsaparilla; central and eastern North America Synonymswild sarsaparillafalse sarsaparillawild sarsparillaAralia nudicaulis Related words Broader terms subshrub Parts genus Aralia WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.