At One

Part of speech: noun (n.)

1. In concord or friendship; in agreement (with each other); as, to be, bring, make, or set, at one, i. e., to be or bring in or to a state of agreement or reconciliation. If gentil men, or othere of hir contree Were wrothe, she wolde bringen hem atoon. Chaucer.

2. Of the same opinion; agreed; as, on these points we are at one.

3. Together. [Obs.] Spenser. He and Aufidius can no more atone Than violentest contrariety. Shak.

4. To stand as an equivalent; to make reparation, compensation, or amends, for an offense or a crime. The murderer fell, and blood atoned for blood. Pope. The ministry not atoning for their former conduct by any wise or popular measure. Junius.