- chopper
- chopping
- chromizing
- chuck
- chuck guard
- chuck lever
- chucking
- chucking reamer
- chute
- circle
- circuit
- circuit closer
- circular chaser
- circular gallery
- circular milling
- circular pitch
- circular roller
- chuck plate
- chucking table
- churn
- cinder
- circlip
- circular cam
- circular table
- circumferential pressure
- circumferential seam
- city planning
- clad cast
- circumferential mark
- cistern
- clack mill
- clad steel
- clamping handle
- clastic resistance
- claw
- cleanliness
- cleanser
- clear distance
- clearance
- clearance fit
- clearance height
- clearance volume
- cleat
- cleavage
- cleavage face
- cleavage plate
- cleaved rock
- clevis
- climatic data
- climatic element
- climatic front
- clamp
- clamping slot
- clamping surface
- clamshell
- clamshell excavator
- clapper
- clay facing
- clay residue
- cleaning chip
- clearance diagram
- clearance gauge
- clearance meter
- clearance space
- cleared
- clearing
- cleavability
- cleave fracture
- clench
- clevis pin
- climatic effect
- climatic fluctuation
- climatic region
- climb
- climbing
- clinker building
- clip hooks
- clipping
- cloaca
- clockwork
- clog
- close
- close check
- close fit
- closure
- closure dam
- closure execution
- closure flow
- closure gate
- closure plan
- closure plug
- closure time
- cloth cleaner
- cloth locker
- cloudburst test
- clout nail
- cloverleaf
- club hammer
- club handle
- clue weld