[ OE. at on, atone, atoon, attone. ] 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. [ 1913 Webster ]
If gentil men, or othere of hir contree
Were wrothe, she wolde bringen hem atoon. Chaucer. [ 1913 Webster ]
2. Of the same opinion; agreed; as, on these points we are at one. [ 1913 Webster ]
3. Together. [ Obs. ] Spenser. [ 1913 Webster ]