The term 'LETTER ANGLO SAXON' can be broken down into three parts: 'LETTER', 'Anglo', and 'SAXON'. The first part, 'LETTER', is a written symbol used to represent a sound or a word. The second part, 'Anglo', refers to the Anglo-SAXON people, who were a group of Germanic tribes that settled in Britain during the 5th century. The third part, 'SAXON', is an adjective used to describe something related to the Anglo-SAXON people. The crossword solution for this term is ETH, which is a LETTER in the Old English alphabet.