a document that you sign that states officially that you agree to give something to someone in authority, especially when you have been forced to do so or because it is necessary to do so
I understand that by signing this surrender I do irrevocably and permanently give up all custody and other parental rights I have to the child.
the act of admitting defeat and of no longer fighting or resisting an enemy or opponent
What initially looked like surrender was only a temporary withdrawal of troops.
the act of giving something to someone in authority because you have been forced to do so or because it is necessary to do so
The defendant failed to comply with a deadline for the surrender of subpoenaed documents.