rugged in WordNet English dictionary

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