1. The internal mechanism of a device
   - works 
2. A mine or quarry that is being or has been worked
   - working

Type of: excavation, mechanism

• Rubus phoenicolasius
• Rubus saxatilis
• Rubus spectabilis
• Rubus strigosus
• Rubus trivialis
• Rubus ursinus
• Rubus ursinus loganobaccus
• ruby
• ruby silver
• ruby spinel
• ruby wood
• ruby-crowned kinglet
• ruby-crowned wren
• ruby-red
• ruche
• ruched
• ruck
• convection
• convective
• convector
• convenance
• convene
• convener
• convenience
• convenience food