The Collaborative International Dictionary of English v.0.48:
Concur \Con*cur"\, v. i. [imp. & p. p. Concurred; p. pr. & vb.
n. Concurring.] [L. concurrere to run together, agree; con-
+ currere to run. See Current.]
1. To run together; to meet. [Obs.]
Anon they fierce encountering both concurred
With grisly looks and faces like their fates. --J.
2. To meet in the same point; to combine or conjoin; to
contribute or help toward a common object or effect.
When outward causes concur. --Jer. Colier.
3. To unite or agree (in action or opinion); to join; to act
jointly; to agree; to coincide; to correspond.
Mr. Burke concurred with Lord Chatham in opinion.
Tories and Whigs had concurred in paying honor to
This concurs directly with the letter. --Shak.
4. To assent; to consent. [Obs.] --Milton.
Syn: To agree; unite; combine; conspire; coincide; approve;