The term 'LARGE CORK' can be solved by the four-letter word 'BUNG'. A BUNG is a stopper, usually made of cork, that is used to seal a container such as a bottle or barrel. It is often used in winemaking and brewing, where it is inserted into the opening of a barrel or carboy to prevent air from entering and spoiling the contents. The term 'large cork' could refer to a larger version of this type of stopper, which would be used to seal a larger container.