* steadily work hard
* work persistently
* work without breaks
Grind stone:
A rotating solid stone wheel used for sharpening, shaping, etc.
Sample Usage
I you keep nose to the grindstone,you will finish the project before the deadline.
If i keep my nose to the grindstone i can excel in the examination.
If I put my nose to the grindstone, I'll finish the job by the end of the day.
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