- the raised helical rib going around a screw.
- In order to investigate the integrated performance of the helical ribbed heat exchanger (HRHE),the three-dimension models with single period of the heat exchanger were set up.
- The butcher chopped off a rib of frozen pork.
- He broke a rib when he fell off his horse.
- He has broken a rib and the doctor has strapped it up.