mimosa

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

• noun Any of various mostly tropical plants of the genus Mimosa in the pea family, having globular heads of small flowers with protruding stamens and usually bipinnate, compound leaves often sensitive to touch or light.
• noun Any of various similar plants of the genus Acacia in the pea family, especially silver wattle.
• noun A drink consisting of champagne and orange juice.

from The Century Dictionary.

• noun Same as thiazol yellow.
• noun A large genus of leguminous plants of the suborder Mimoseæ and the tribe Eumimoseæ, characterized by a legume with entire or jointed valves which break away from a narrow persistent placenta.
• noun [lowercase] A plant of this genus.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Bot.) A genus of leguminous plants, containing many species, and including the sensitive plants (Mimosa sensitiva, and Mimosa pudica).

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

• noun botany A plant belonging to the genus Mimosa usually found in tropical climates, their leaves are usually prickly and sensitive to touch or light, and have small white or pink flowers.
• noun Silk tree or the pink siris.
• noun Acacia.
• noun A cocktail consisting of champagne and orange juice.

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

• noun any of various tropical shrubs or trees of the genus Mimosa having usually yellow flowers and compound leaves
• noun evergreen Australasian tree having white or silvery bark and young leaves and yellow flowers
• noun a mixed drink containing champagne and orange juice