ˈseɪɡəu n. (pl. -os) 1 a kind of starch, madefromthe powdered pith of the sago palm and used in puddings etc. 2 (in full sago palm) any of severaltropical palms and cycads, esp. Cycas circinalis and Metroxylon sagu, from which sago is made. [Malay sagu (orig. through Port.)]