to place persons opposite; to come face to face with
to compare (with); to check (against); to match; to tally
証拠を突き合わせて確認する。
Compare the evidence and confirm.
刑事は二人の証言を突き合わせた。
The detective compared the two testimonies.
監査人は二つの会計記録を突き合わせる必要がある。
The auditor needs to compare the two accounting records.