Noun
Any of many species of sedge or grass that have leaves with sharp, serrated edges, including
(informal, New Zealand) Any grass species of the genus Austroderia (toetoe, syn. Cortaderia).
Carex geminata (in Carex subg. Carex)
Cyperus ustulatus (giant umbrella sedge)
Ficinia spiralis (golden sand sedge)
Gahnia spp. (sawsedge, saw-sedge)
Gahnia grandis (syn. Cladium psittacorum)
Gahnia setifolia (toetoe)
Source: en.wiktionary.org