Meaning

1 senses
  1. (uncountable)A water pepper plant, of species Persicaria hydropiper (formerly Polygonum hydropiper).

Origin

From arse + smart, because the plant stings when it touches bare skin, and was often laid

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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See also

neighbours in the dictionary
arsesmart — meaning, examples, forms, synonyms | Krumeto