English Expression · Advanced
patent log
A taffrail log
Pronunciation: say patent log
Meaning
A mechanical device towed behind a ship to measure the distance traveled through the water.
Example
The navigator checked the patent log to determine the distance traveled through the water.
The navigator checked the patent log to determine the distance traveled through the water.
Practice tips
- Practice patent log out loud — read the pronunciation guide above and repeat.
- Use it in your own sentence today; reuse beats rereading.
- Pay attention to context: this English expression is for advanced-level learners.