Neuter of a compound of cheir and grapho; something hand-written ("chirograph"), i.e. A manuscript (specially, a legal document or bond (figuratively)) -- handwriting.
KJV: Blotting out the handwriting of ordinances that was against us, which was contrary to us, and took it out of the way, nailing it to his cross;
NASB: having canceled out the certificate of debt consisting of decrees against us, which was hostile to us; and He has taken it out of the way, having nailed it to the cross.