- rimrock
- rimstone
- rimu
- rimy
- rincon
- rind
- rindless bacon
- rindless cheese
- ring
- ring accelerometer
- ring accumulator
- ring antenna
- ring arm
- ring armature
- ring back
- ring balance
- ring beam
- ring belt
- ring bolt
- ring breakage
- ring burner
- ring burr
- ring cantilever
- ring chain
- ring channel
- ring chromatid
- ring circuit
- ring clamp
- ring cleavage
- ring closure
- ring coal
- ring collector
- ring collider
- ring compound
- ring conduit
- ring configuration
- ring connection
- ring content
- ring core
- ring counter
- ring craft
- ring crater
- ring crypt
- ring current
- ring cutter
- ring dam
- ring dealer
- ring dealing
- ring deformation
- ring domain
- ring doughnut
- ring driver
- ring duct
- ring dystocia
- ring expander
- ring feeder
- ring fire
- ring flash
- ring footing
- ring formation
- ring foundation
- ring frame
- ring function
- ring furnace
- ring gall
- ring gap
- ring gate
- ring gauge
- ring gear
- ring groove
- ring head
- ring highway
- ring hydrocarbon
- ring indicator
- ring isomerism
- ring joint
- ring kiln
- ring lubrication
- ring magnet
- ring main
- ring mains
- ring modulator
- ring module
- ring network
- ring nozzle
- ring nut
- ring off
- ring oiler
- ring operation
- ring ore
- ring oscillator
- ring ouzel
- ring pessary
- ring rail
- ring reaction
- ring reamer
- ring road
- ring rot
- ring seal
- ring shake