What is Insinuare?

Legal Definition
LatIn the civil law. To put Into; to deposit a writing in court, answering nearly to the modern expression "to file." Si non mandatum actis insinuatum est, if the power or authority be not deposited among the records of the court. Inst. 4, 11, 3. To declare or acknowledge before a judicial officer; to give an act an official form.
-- Black's Law Dictionary
Legal Definition
To deposit in the court records.
-- Ballentine's Law Dictionary