where did term piggy bank come from
A piggy bank, c. 1970s. Earthen pots used in Nepal as piggy bank. Piggy bank (sometimes penny bank or money box) is the traditional name of a coin container usually used by children. The piggy bank is known to collectors as a still bank as opposed to the  mechanical banks  popular in the early 20th century.These items are also often used by corporations for promotional purposes.y the 18th century, the term pig jar had evolved to pig bank. As earthenware was supplanted by other materials, such as glass, plaster, and plastic, the name gradually began to refer specifically to the shape of the bank, instead of what was used to make it.