nose to the grindstone, keep one's
Stay hard at work, as in We expect John to get good grades again, since he really keeps his nose to the grindstone. This expression, first recorded in 1539, alludes to a tool that must be sharpened by being held to a grindstone.
Words nearby nose to the grindstone, keep one's
nose out,
nose out of joint,
nose out of joint, have one's,
nose rag,
nose ring,
nose to the grindstone, keep one's,
nose to the grindstone, keep one's,
nose wheel,
nosebag,
noseband,
nosebleed