# poison oak

> English word · Noun

## Definitions
1. Any of the species of Toxicodendron with compound leaves having three oak-like leaflets, native to North America.

## Etymology
Its leaves resemble those of the true oaks, and the leaves and twigs contain urushiol, which can cause allergic reactions.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/poison-oak