The Collaborative International Dictionary
Euryale \Eu*ry"a*le\, n. [NL., fr. Euryale, one of the Gorgons.]
(Bot.) A genus of water lilies, growing in India and China. The only species ( Euryale ferox) is very prickly on the peduncles and calyx. The rootstocks and seeds are used as food.
(Zo["o]l) A genus of ophiurans with much-branched arms. [1913 Webster] ||
Wikipedia
Euryale ferox (also known as Makhana in Hindi and Punjabi, fox nut, foxnut, 'thangjing' in Meeteilon i.e. Manipuri, makhana, nikori (in Assamese), Onibas (Onibasu) in Japanese or gorgon nut) is the only extant species in the genus Euryale. It is a flowering plant classified in the water lily family, Nymphaeaceae, although it is occasionally regarded as a distinct family Euryalaceae. Unlike other water lilies, the pollen grains of Euryale have three nuclei.