ridge tent 
noun
A tent having a central ridge supported by a pole or frame at each end.A customer recently asked me to make him a couple of walled ridge tents to go with his No 14 Bell tent.
- ridley turtle
- ridotto
- riebeckite
- Riedel
- rief
- Riefenstahl, Leni
- riegel
- rieing
- riel
- Riel, Louis
- Rie, Lucie
- riem
- Riemann, Bernhard
- Riemann curvature
- Riemann curvature tensor
- Riemann geometry
- Riemann hypothesis
- Riemannian geometry
- Riemann integrable
- Riemann integral
- Riemann integration
- Riemann's geometry
- Riemann's hypothesis
- Riemann's integral
- Riemann space