silver wattle

noun
  1. a tree, Acacia dealbata, of the legume family, native to Australia and Tasmania, having feathery, silver-gray foliage and fragrant yellow flowers.

Origin of silver wattle

First recorded in 1870–75
Also called mimosa.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018