rose geranium

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Any of several pelargoniums having rose-pink flowers and fragrant leaves containing an essential oil used for flavoring and in perfumes and cosmetics.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Any of several flowering plants, of the genus Pelargonium, having pink flowers and fragrant leaves; especially Pelargonium graveolens, Pelargonium roseum, and Pelargonium sidoides.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun any of several southern African geraniums having fragrant three-lobed to five-lobed leaves and pink flowers