Medical Dictionary
poison ivy
noun \-ˈī-vē\
Medical Definition of POISON IVY
1
a : a climbing plant of the genus Rhus (R. radicans synonym Toxicodendron radicans) that is especially common in the eastern and central United States, that has leaves in groups of three, greenish flowers, and white berries, and that produces an acutely irritating oil causing a usually intensely itching skin rash b : any of several plants closely related to poison ivy; especially : poison oak 1b
2
: a skin rash produced by poison ivy
Seen & Heard
What made you want to look up poison ivy? Please tell us where you read or heard it (including the quote, if possible).