pedometer
nounUK /pɪˈdɒmɪtə/
US /pɪˈdɑːmɪtər/
A pedometer is a small tool that counts how many steps you take.
She wore a pedometer on her walk to see how far she went.
OTHER MEANINGS
2. A device used by athletes to measure distance walked or run by counting steps.
The runner checked his pedometer after the marathon.
3. An app or feature on a phone that tracks daily steps.
My phone's pedometer says I walked 8,000 steps today.
4. Any instrument that records the number of steps taken by a person or animal.
Researchers attached a pedometer to the dog to study its activity.