The Texas Flag Symbol is a STAR, which is represented by the 4-letter word 'STAR' and the 8-letter word 'LONESTAR'. The Lone STAR is the official symbol of the state of Texas and has been used on the state flag since 1839. It is also featured on the state seal and is the basis for the state's nickname, the 'Lone STAR State'. The Lone STAR is a symbol of independence and strength, and is often used to represent Texas pride.