waratahPronunciation: /ˈwɔːrətɑː, ˌwɒrəˈtɑː/Definition of waratah noun an Australian shrub which bears slender leathery leaves and clusters of crimson flowers. Genus Telopea, family Proteaceae: several species, in particular T. speciosissima, which is the emblem of New South Wales Origin: late 18th century: from Dharuk warata