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.
Not Financial Advice: This code is typically used by Chase Bank which indicates that the bank is holding a credit to your account. HOLD REL MEM CR status is associated to a recent deposited check. Banks normally place a hold on a deposited check, as this is more complicated compared to other deposits.