The term 'Piggy Bank Feature' refers to a feature of a piggy bank that allows coins to be inserted into the bank. This feature is composed of two parts: a SLIT and a SLOT. The SLIT is a small opening in the top of the bank, which allows coins to be dropped in. The SLOT is a larger opening at the bottom of the bank, which allows coins to be removed from the bank. Together, these two features make up the Piggy Bank Feature.