blue chip-a stock in a large company or corporation that is considered to be a secure investment coglomerate-a group of companies, operating in different fields, that have joined together collateral-anything that acts as a security or a guarantee for a loan credit card-a card which guarantees payment for goods and services purchased by the cardholder, who pays back the bank or finance company at a later date. current account-one that generally pays little or no interest, but allows the holder to witdraw cash without any restrictions defensive stock - a stock-in an industry not much affected by cyclical trends - that offers a good return but only a limited chance of a rise or decline in price.