- 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.
- She gave me a nudge in the ribs.
- He poked me in the ribs with his elbow.
- He had two broken ribs and a fractured skull.