1. To agree; to consent.
2. In a judicial opinion, to agree with the judgment in the case (usu. as expressed in the opinion of another judge), or the opinion of another judge, but often for different reasons or through a different line of reasoning.
3. (Of a house in a bicameral legislature) to accept an amendment passed by the other house.
“When a bill has been amended in the second house and passed with the amendment, it is returned by that house to the house of its origin with a message stating the facts and requesting the house where the bill originated to concur in the amendment.” National Conference of State Legislatures, Mason’s Manual of Legislative Procedure § 766, at 553 (2000).
4. Civil law. To join with other claimants in presenting a demand against an insolvent estate.