To indorse; to sign on the back; to sign generally by way of acceptance or approval. Where a warrant issued in one county is presented to a magistrate of another county and he signs it for the purpose of making it executory in his county, he is said to “back” it. 4 Bl. Comm. 201. So an Indorser of a note or bill is colloquially said to “back” it. Seabury v. Hungerford, 2 Hill (N. Y.) 80.
Black’s Law Online Dictionary
