spearwort means any of various perennial herbaceous plants in the Ranunculus (buttercup) genus. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
Etymology
From Middle English sperwort, sperewort, from Old English sperewyrt, i.e. spear + wort.
noun
- Any of various perennial herbaceous plants in the Ranunculus (buttercup) genus.“Nor taint-worm ſhall infect the yeaning herds / Nor penny-graſs, nor ſpearwort's poiſ'nous leaf.”