poison ivy

noun

a vine or shrub, Rhus radicans, having trifoliate leaves and whitish berries and causing severe dermatitis when touched by persons sensitive to it.

poison oak.

the rash caused by touching poison ivy.

Origin of poison ivy

An Americanism dating back to 1775–85

Words nearby poison ivy

poison dogwood, poison gas, poison haw, poison hemlock, poisoning, poison ivy, poison oak, poisonous, poison-pen, poison-pen letter, poison pill

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for poison ivy

It is closely allied to the poison-ivy of the Eastern States, and very similar in its effects.
The Wild Flowers of California: Their Names, Haunts, and Habits|Mary Elizabeth Parsons
Look at the poison-ivy, but do not touch it, and you will see it climbing over tree-trunks and fence-posts by means of rootlets.
Harper's Round Table, August 20, 1895|Various
I'd thought of poison-ivy or some kind of plant they'd been grubbing at.
Average Jones|Samuel Hopkins Adams
The poison-ivy belongs to the Sumach family, while the creeper belongs to the Grape family.
A Little Garden Calendar for Boys and Girls|Albert Bigelow Paine

Do poison-ivy and Virginia creeper belong to the same family?
A Little Garden Calendar for Boys and Girls|Albert Bigelow Paine

British Dictionary definitions for poison ivy

poison ivy

noun

any of several North American anacardiaceous shrubs or vines of the genus Rhus (or Toxicodendron), esp R. radicans, which has small green flowers and whitish berries that cause an itching rash on contactSee also sumach (def. 1)

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for poison ivy

poison ivy

n.

A North American shrub or vine that has compound leaves with three leaflets, small green flowers, and whitish berries and that causes a rash on contact.poison oak

单词	poison ivy
释义	poison ivy noun a vine or shrub, Rhus radicans, having trifoliate leaves and whitish berries and causing severe dermatitis when touched by persons sensitive to it. poison oak. the rash caused by touching poison ivy. Origin of poison ivy An Americanism dating back to 1775–85 Words nearby poison ivy poison dogwood, poison gas, poison haw, poison hemlock, poisoning, poison ivy, poison oak, poisonous, poison-pen, poison-pen letter, poison pill Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for poison ivy It is closely allied to the poison-ivy of the Eastern States, and very similar in its effects. The Wild Flowers of California: Their Names, Haunts, and Habits\|Mary Elizabeth Parsons Look at the poison-ivy, but do not touch it, and you will see it climbing over tree-trunks and fence-posts by means of rootlets. Harper's Round Table, August 20, 1895\|Various I'd thought of poison-ivy or some kind of plant they'd been grubbing at. Average Jones\|Samuel Hopkins Adams The poison-ivy belongs to the Sumach family, while the creeper belongs to the Grape family. A Little Garden Calendar for Boys and Girls\|Albert Bigelow Paine Do poison-ivy and Virginia creeper belong to the same family? A Little Garden Calendar for Boys and Girls\|Albert Bigelow Paine British Dictionary definitions for poison ivy poison ivy noun any of several North American anacardiaceous shrubs or vines of the genus Rhus (or Toxicodendron), esp R. radicans, which has small green flowers and whitish berries that cause an itching rash on contactSee also sumach (def. 1) Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Medical definitions for poison ivy poison ivy n. A North American shrub or vine that has compound leaves with three leaflets, small green flowers, and whitish berries and that causes a rash on contact.poison oak The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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