Mimosa

(noun) evergreen Australasian tree having white or silvery bark and young leaves and yellow flowers. Synonyms: silver wattle, mimosa, Acacia dealbata.

(noun) any of various tropical shrubs or trees of the genus Mimosa having usually yellow flowers and compound leaves. Synonyms: mimosa.

(noun) a mixed drink containing champagne and orange juice. Synonyms: mimosa, buck's fizz.