Definition of spearwort in US English:

spearwort

noun

  • A plant of the buttercup family that grows in marshes and ditches, with thick hollow stems and long narrow spear-shaped leaves.

    Genus Ranunculus, family Rununculaceae: the lesser spearwort (R. flammula) and the less common greater spearwort (R. lingua)

    • ‘The whole plant spearwort buttercup has agents that strongly causes reddening or irritation when applied to the skin.’

Pronunciation

spearwort

/ˈspi(ə)rwərt/