‖ tupak-grass|ˈtuːpəkgrɑːs, -æ-| [f. the Maori name + grass n.1] A New Zealand grassy sedge, Carex appressa. 1884Miller Plant-n., Carex appressa, Otago Tupak⁓grass.1901A. Trotter E. Galloway Sk. 319/2 He advocated a plan for making tracts of sand productive by planting them with Tupac grass.