Definitions

from The Century Dictionary.

  • noun A plant, Polygonum Hydropiper, also called smartweed (which see).

from the GNU version of the Collaborative International Dictionary of English.

  • noun Smartweed; water pepper.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun The water-pepper plant, Polygonum hydropiper.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From arse + smart, because the plant stings when it touches bare skin, and was often laid in beds to kill fleas.

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Examples

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