teak /tiːk/noun 3adjective 1forms 1 noun3 •An extremely durable timber highly valued for shipbuilding and other purposes, yielded by Tectona grandis (and Tectona spp.). •A tree of the species in the genus Tectona. •A yellowish brown colour, like that of teakwood. adjective1 •Of a yellowish brown colour, like that of teak wood. formsteaks