The guillotine is a machine used to execute people by decapitation (chopping off their heads). A guillotine is made of a heavy blade attached to a rack, which moves up and down on a vertical frame. When the rack is let go, it will fall down and the blade will cut the convict's head off.
A national producer number, or NPN, is a tool to protect individual insurance agents and agencies from identity theft and fraudulent representations made to the National Insurance Producer Registry, or NIPR.
Acquirer reference number,(ARN), is a unique number that tags a credit card transaction when it goes from the merchants bank (the acquiring bank) through the card scheme to the cardholder's bank (the issuer). This number can be used by issuing banks to trace a transaction with an acquirer.