(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.

One who, or that which, roots; one that tears up by the roots. / One who roots or rummages through something.

(US, slang) One who roots for, or applauds, something.

plural of rooter

(archaic) third-person singular simple present indicative form of root

(archaic) second-person singular simple present form of root

The state or quality of being rooted

In a rooted manner; ingrainedly.