Definition of ironclad. 1  1 : sheathed in iron armor âused especially of naval vessels. 2  2 : so firm or secure as to be unbreakable: such asa : binding an ironclad oathb : having no obvious weakness an ironclad case against the defendant.
Best Answer: CR means a credit. If this appears on the balance due line of your statement, it means that you owe nothing and that you are that much ahead of future charges and no payment or acknowledgment is needed.
Definition. A banking system in which only a fraction of the total deposits managed by a bank must be kept in reserve. The amount of the deposits equals the amount of the reserves times the deposit multiplier.In the U.S., this system is maintained by the Federal Reserve Board. banking system in which only a fraction of the total deposits managed by a bank must be kept in reserve.