What does "assurance" mean?

Additional senses

1. 2.The state of being assured; firm persuasion; full confidence or trust; freedom from doubt; certainty. Let us draw with a true heart in full assurance of faith, having our hearts sprinkled from an evil conscience. Heb. x.
2. 3.3. Firmness of mind; undoubting, steadiness; intrepidity; courage; confidence; self-reliance. Brave men meet danger with assurance. Knolles. Conversation with the world will give them knowledge and assurance. Locke.
3. 4.Excess of boldness; impudence; audacity; as, his assurance is intolerable.
4. 5.Betrothal; affiance. [Obs.] Sir P. Sidney.
5. 6.Insurance; a contract for the payment of a sum on occasion of a certain event, as loss or death. Note: Recently, assurance has been used, in England, in relation to life contingencies, and insurance in relation to other contingencies. It is called temporary assurance, in the time within which the contingent event must happen is limited. See Insurance.
6. 7.(Law) Any written or other legal evidence of the conveyance of property; a conveyance; a deed. Note: In England, the legal evidences of the conveyance of property are called the common assurances of the kingdom. Blackstone.