silverweed

[ sil-ver-weed ]
/ ˈsɪl vərˌwid /

noun

a plant, Potentilla anserina, of the rose family, the leaves of which have a silvery pubescence on the underside.
any of several other plants having leaves with a silvery appearance.

Origin of silverweed

First recorded in 1570–80; silver + weed1

British Dictionary definitions for silverweed

silverweed
/ (ˈsɪlvəˌwiːd) /

noun

a rosaceous perennial creeping plant, Potentilla anserina, with silvery pinnate leaves and yellow flowers
any of various convolvulaceous shrubs of the genus Argyreia, of SE Asia and Australia, having silvery leaves and purple flowers