A plant of the genus Hedera (H. helix), common in Europe. Its leaves are evergreen, dark, smooth, shining, and mostly five- pointed; the flowers yellowish and small; the berries black or yellow. The stem clings to walls and trees by rootlike fibers.
- Any of several woody, climbing or trailing evergreen plants of the genus Hedera native to the Old World, especially H. helix, having palmately lobed leaves, root-bearing young stems, and small green flowers grouped in umbels.
- Informal A university in the Ivy League. Often used in the plural: Cornell is one of the Ivies.