Meaning

noun evergreen Australasian tree having white or silvery bark and young leaves and yellow flowers

noun any of various tropical shrubs or trees of the genus Mimosa having usually yellow flowers and compound leaves

noun a mixed drink containing champagne and orange juice

originFrom New Latin mimosa, from Latin mimus (“mime, actor”), referring to Mimosa pudica and its habit of shrinking back when touched. The cocktail is named after the bright yellow, fragrant flowers of the mimosa Acacia dealbata.

Etymology from Wiktionary, CC BY-SA 3.0