1. An unpaired sinus of the dura mater
   - straight sinus, tentorial sinus

Type of: sinus, venous sinus

• rajah
• rajanya
• Rajasthan
• Rajidae
• Rajiformes
• Rajpoot
• Rajput
• Rakaposhi
• rake
• rake handle
• rake in
• rake up
• rake-off
• rakehell
• raker
• rakish
• rakishly
• rakishness
• rale
• Ralegh
• Raleigh
• rallentando
• Rallidae
• rally
• rallying