ring·fort 
(rĭngfôrt′)
(rĭngfôrt′)n.
An ancient or medieval settlement or farmstead fortified with a circular bank, ditch, or stone wall, situated usually on a hill or promontory in northern Europe, and especially in Ireland.
- sensibility
- sensible
- sensible horizon
- sensibleness
- sensibly
- sensillum
- sensimilla
- sensimilla
- sensitive
- sensitively
- sensitiveness
- sensitive plant
- sensitivity
- sensitivity training
- sensitization
- sensitize
- sensitizer
- sensitometer
- sensitometric
- sensitometry
- sensor
- sensoria
- sensorial
- sensorially
- sensorimotor