Sneeze·wort n. Bot. A European herbaceous plant (Achillea Ptarmica) allied to the yarrow, having a strong, pungent smell.
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  sneezewort
       n : Eurasian herb having loose heads of button-shaped white
           flowers and long gray-green leaves that cause sneezing
           when powdered [syn: sneezeweed yarrow, Achillea
           ptarmica]