walnut UK /ˈwɔːlnʌt/US /ˈwɔlnət/noun 4adjective 1forms 1 noun4 •A nut of the walnut tree. •Wood of the walnut tree. •A hardwood tree of the genus Juglans. •Dark brown colour, the colour of walnut wood. adjective1 •Having a dark brown colour, the colour of walnut wood.A long-skirted, cabalistically-cut coat of a faded walnut tinge enveloped him; the overlapping sleeves of which were rolled up on his wrists. — 1851 formswalnuts
