Côr'mus, n.

noun

n. [Gr. κορμός, the trunk of a tree with the boughs cut off, from κείρειν, to shear.] (Bot.) A solid, bulbous root, like that of the Indian turnip, or crocus. [Written also corm.] Gray.

A botanical diagram of a corm with a short upright stem and numerous roots extending from its base.
Cormus.