stopwatch
noun
- handheld timepiece designed to measure an amount time
Wiktionary
noun
Etymology: From stop + watch.
- A timepiece designed to measure the amount of time elapsed between a particular time when activated and when the piece is deactivated.
“I etched the face of a stopwatch on the back of a raindrop And did a swap for the sand in an hourglass”
verb
Etymology: From stop + watch.
- To time (something) by means of a stopwatch.