silk oak

or silky oak

noun
  1. any of several Australian trees of the genus Grevillea, especially G. robusta, having feathery, fernlike leaves and showy orange or yellow flowers, grown as a street tree in Florida and California.

Origin of silk oak

First recorded in 1865–70
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018