Webster’s Revised Unabridged Dictionary · 1913
Corroboration
Cor·rob′o·ra′tion (k?r-r?b′?-r?′sh?n), n. [Cf. F. corroboration.] 1. The act of corroborating, strengthening, or confirming; addition of strength; confirmation; as, the corroboration of an argument, or of information.
2. That which corroborates.