Contractile root a specialized root developed by certain bulb-and corm-forming plants that serve to pull the bulb or corm down to the appropriate depth in the soil, e. g. Crocus.

收缩根的作用是把形成的鳞茎或球茎定位于土壤的某一特定深度，例如番红花属的植物。

youdao

Root Orange has developed a particularly innovative method for exploiting valuable domain names.

FORBES: Should A Startup Spend VC Funding On A Domain Name?

Y. art collective, a remote-controlled gray blimp that hovered ominously over the ferry on the way to New Jersey and a cheeky presentation from ICQ founder Yossi Vardi on why excessive heat from laptops seriously impairs male gonads and is the root of population decline in certain nations of the developed world.

FORBES: Magazine Article

Also known as celery root, knob celery and turnip-rooted celery, celeriac developed from the same wild species as did stalk celery.

NPR: The Vegetable World's Ugly Duckling: Celeriac