oar·lock 
(ôrlŏk′)
(ôrlŏk′)n.
A device, usually a U-shaped or circular metal hoop on a swivel in the gunwale, used to hold an oar in place and as a fulcrum in rowing.
- Roebling
- roebuck
- roe deer
- roentgen
- Roentgen
- roentgenium
- roentgenize
- roentgeno-
- roentgenogram
- roentgenograph
- roentgenographic
- roentgenographically
- roentgenography
- roentgenologic
- roentgenological
- roentgenologically
- roentgenologist
- roentgenology
- roentgenoscope
- roentgenoscopic
- roentgenoscopy
- roentgenotherapy
- roentgen ray
- Roethke
- Rogaine