poison-ivy
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See also: poison ivy
English[edit]
Etymology[edit]
Noun[edit]
- A woody vine plant in the family Anacardiaceae (Toxicodendron radicans or Rhus toxicodendron), well-known for its ability to produce urushiol, a skin irritant that causes an itching rash for most people.
Usage notes[edit]
Although usually written as poison ivy, the name is often spelled "poison-ivy" to indicate that it is not a true Ivy or Hedera.