▸ noun an Australian fern with long stalks bearing either silvery-green clover-like lobes or woody globular cases containing spores, growing typically in water in areas of intermittent flooding.
Marsilea drummondii, family Marsiliaceae.
▪ [mass noun] a food made from the spores of the nardoo, traditionally eaten by some Australian Aboriginal people:
[as modifier] nardoo flour.
– ORIGIN mid 19th century: from an Aboriginal language.