Sago n. : A dry granulated starch imported from the East Indies, much used for making puddings and as an article of diet for the sick; also, as starch, for stiffening textile fabrics. It is prepared from the stems of several East Indian and Malayan palm trees, but chiefly from the Metroxylon Sagu; also from several cycadaceous plants (Cycas revoluta, Zamia integrifolia, etc.).

Example:
Is it normal for Sago palms to have yellowish leaves?

Taxonomy
sago, sago palm, starch, cycads, palms, stems, Metroxylon, dishes, Sago starch, pith, Pearl sago, grams, fibre, flour, free encyclopedia, pancake, New Guinea, carbohydrate.

Defination from the web:
Sago pearls are similar in appearance to tapioca pearls, and the two may be used interchangeably in some dishes. ... Sago flour (from Metroxylon) is nearly pure carbohydrate and has very little protein, vitamins, or minerals. ...