Phrase guide

western poison oak

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

No pronunciation record was provided for this word.

1

noun

Meaning 1

A vine or small shrub native to western North America, Toxicodendron diversilobum, which exudes a toxic oil containing urushiol that causes a skin rash.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

poisonous shrub of the Pacific coast of North America that causes a rash on contact

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: Toxicodendron diversilobum, Rhus diversiloba

Antonyms: none provided

Broader terms: poisonous plant

History

Etymology

From western + poison oak.