tuber

These defensive chemicals are found inside cells throughout the cassava plant's leaves, stem and tubers, where they usually sit idle.

Cedar just smiled at me as she nibbled on a cattail tuber.

Grizzlies once roamed the North Cascades in great numbers, digging up tubers, foraging for berries and going about their business as ecosystem engineers.

If this is your first year growing these bountiful blooms, you might be questioning how to get from a gnarly potatolike tuber to armloads of cut flowers.

In southern Malawi, in a district called Chikwawa, some residents were wading into a river rife with crocodiles to collect a wild tuber known as nyika to curb their hunger.