Taproot

['tæpruːt]

Definition

(noun.) something that provides an important central source for growth or development; 'the taproot of his resentment'; 'genius and insanity spring from the same taproot'.

(noun.) (botany) main root of a plant growing straight downward from the stem.

Inputed by Chris--From WordNet

Definition

(n.) The root of a plant which penetrates the earth directly downward to a considerable depth without dividing.

Edited by Glenn