The term 'SMALL IPOD' can be summarized by the crossword solution 'NANO, ' which is a four-letter word. The iPod Nano was a digital media player designed and marketed by Apple Inc. It was introduced in 2005 as a replacement for the iPod Mini and was the smallest model in Apple's iPod family. It was discontinued in 2017, but it was popular during its time due to its small size and long battery life.