poison oak
n.
1. Either of two plants, Toxicodendron pubescens, a shrub of the southeast United States, or T. diversilobum, a shrub or vine of western North America, having compound leaves with three lobed or toothed leaflets, and causing a rash on contact.
2. See poison ivy.
3. A skin rash caused by contact with one of these plants.
poison oakwestern poison oak
Toxicodendron diversilobum
- Indo-European root: oi-no-
- Indo-European root: oit-
- Indo-European root: oktō(u)
- Indo-European root: okw-
- Indo-European root: op-
- Indo-European root: or-
- Indo-European root: orbh-
- Indo-European root: ors-
- Indo-European root: ost-
- Indo-European root: ous-
- Indo-European root: owi-
- Indo-European root: pag-
- Indo-European root: pan-
- Indo-European root: pant-
- Indo-European root: papa
- Indo-European root: past-
- Indo-European root: pau-
- Indo-European root: pau-
- Indo-European root: paəwr̥
- Indo-European root: ped-
- Indo-European root: peig-
- Indo-European root: peiə-
- Indo-European root: peku-
- Indo-European root: pekw-
- Indo-European root: pel-