An argument, or apparent argument, which professes to be decisive of the matter at issue, while in reality it is not; a specious argument.
Deceptive or false appearance; that which misleads the eye or the mind.
A promise to pay a sum of money in the event that another person fails to fulfill an obligation.
One who undertakes to pay money or perform other acts in the event that his principal fails therein.
A substitute; a hostage.
Evidence; confirmation; warrant.
Certainty.
That which makes sure; that which confirms; ground of confidence or security.