The term 'bluffs' is a six-letter word that refers to a type of landform. Bluffs are typically formed by the erosion of rivers and streams, and they are characterized by steep slopes and high cliffs. They are often found along the edges of rivers and lakes, and they can also be found in other areas such as mountains and deserts. Bluffs are often used as a natural defense against enemies, and they can also provide a scenic view for those who visit them.