To put one's nose to the grindstone

Related to To put one's nose to the grindstone: fly in the ointment, go to bat for
to oppress one; to cause one to work hard and steadily.
to set oneself to a long and arduous task.

See also: Grindstone, Grindstone

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
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