A woody vine plant in the family Anacardiaceae (Toxicodendron radicans or Rhus toxicodendron), well-known for its ability to produce urushiol, a skin irritant that causes an itching rash for most people.

Any of three ivy-like species of Toxicodendron, known for their ability to cause an itching rash and blistering for most people, through urushiol, an oil that is a skin irritant.

The leaf of the ivy.

Used in the names of various plants the leaves of which resemble those of the ivy.

Glechoma hederacea, an aromatic, perennial, evergreen creeper of the mint family Lamiaceae

Glechoma hederacea, an aromatic, perennial, evergreen creeper of the mint family Lamiaceae.

Virginia creeper

(US, education, informal) A small liberal arts college that has the academic quality or prestige of an Ivy League university.

(US, education, informal) A public university that has the academic quality or prestige of an Ivy League university.

(US) A person who was educated at an Ivy League institution.