salicaria Save DMLBS salicaria [CL salix+-aria; cf. CL salictarius], (bot.) kind of plant, perh. purple loosestrife (Lythrum salicaria) or yellow loosestrife (Lysimachia vulgaris). 1585 lysimachium, salicaria, willow herbe, or loose strife, waterwillow (Higins Junius' Nomencl. 130/2) OED s. v. waterwillow.