The term 'RUGGED RIDGE' is a combination of two words, 'RUGGED' and 'RIDGE'. The word 'RUGGED' is used to describe something that is strong and durable, while the word 'RIDGE' is used to describe a long, narrow elevation of land. Together, these two words form the term 'RUGGED RIDGE', which is often used to describe a mountain range or other area of land that is characterized by its RUGGED terrain and steep ridges. The crossword solution for this term is 'ARETE', which is a French word meaning 'RIDGE'.