The discovery of the debenture is perhaps only a coincidence.
She could not for a fortune have defined the difference between a debenture and a share.
She had an idea that a debenture was, if anything, more fatal than a share.
I don't need to know what a debenture is, when Mr. Batchgrew's mixed up in it.
He first thought of trying to explain to her just what a debenture was.