| Answer | Crossword Clue |
|---|---|
| racks | toothed bar engaging with the teeth of a pinion |
| rack | toothed bar engaging with the teeth of a pinion |
| pawls | pivoted bar adapted to engage with the teeth of a ratchet wheel or the like so as to prevent movement or to impart motion |
| pawl | pivoted bar adapted to engage with the teeth of a ratchet wheel or the like so as to prevent movement or to impart motion |
