(slang, vulgar, derogatory) Absolutely nothing.

The desire for money is the root cause of all evil.

(mathematics, complex analysis) The theorem that if a complex number is a root for a polynomial with real coefficients, the complex conjugate of that number will also be a root.

(colloquial) Unadorned; suggestive of earlier times.

plural of rootstock

(agriculture) A healthy and vigorous-rooted plant that is used in grafting, most commonly as a sound base to support a scion that bears desirable fruit in orchard culture.

The quality of being rootsy.

comparative form of rootsy: more rootsy

superlative form of rootsy: most rootsy

plural of rootstalk