Read the dictionary definition of rugged. All definitions for this word.
1. sturdy and strong in constitution or construction; enduring
1. with a house full of boys you have to have rugged furniture
2. very difficult; severely testing stamina or resolution
1. a rugged competitive examination
2. the rugged conditions of frontier life
3. the competition was tough
4. it's a tough life
5. it was a tough job
3. topographically very uneven
1. broken terrain
2. rugged ground
4. having long narrow shallow depressions (as grooves or wrinkles) in the surface
1. furrowed fields
2. his furrowed face lit by a warming smile