- silk oak - any of several Australian timber trees having usually fernlike foliage and mottled wood used in cabinetry and veneering
--1 is a kind of grevillea
--1 is a member of genus Grevillea
--1 has particulars:red-flowered silky oak, Grevillea banksii; silver oak, Grevillela parallela; silky oak, Grevillea robusta; beefwood, Grevillea striata