From The Collaborative International Dictionary of English v.0.48:
Atone \A*tone"\ ([.a]*t[=o]n"), v. i. [imp. & p. p. Atoned; p. pr. & vb. n. Atoning.] [From at one,, i. e., to be, or cause to be, at one. See At one.] 1. To agree; to be in accordance; to accord. [Obs.] [1913 Webster]
He and Aufidius can no more atone Than violentest contrariety. --Shak. [1913 Webster]
2. To stand as an equivalent; to make reparation, compensation, or amends, for an offense or a crime. [1913 Webster]
The murderer fell, and blood atoned for blood. --Pope. [1913 Webster]
The ministry not atoning for their former conduct by any wise or popular measure. --Junius. [1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Atone \A*tone"\, v. t. 1. To set at one; to reduce to concord; to reconcile, as parties at variance; to appease. [Obs.] [1913 Webster]
I would do much To atone them, for the love I bear to Cassio. --Shak. [1913 Webster]
2. To unite in making. [Obs. & R.] [1913 Webster]
The four elements . . . have atoned A noble league. --Ford. [1913 Webster]
3. To make satisfaction for; to expiate. [1913 Webster]
Or each atone his guilty love with life. --Pope. [1913 Webster]