Question

(to) keep one's nose to the grindstone Unfortunately, \ can't come to happy hour tonight. I need to keep my nose to the grindstone and finish a proposal I'm working on.origin: A grindstone is a stone disk used for sharpening tools or grinding grain. To work the grindstone, you need to bend over it with your nose close to the stone.

Accepted Answer

to focus on one's work; to focus on working hard

Idiom	(to) keep one's nose to the grindstone
Meaning	to focus on one's work; to focus on working hard
Example	Unfortunately, \ can't come to happy hour tonight. I need to keep my nose to the grindstone and finish a proposal I'm working on. origin: A grindstone is a stone disk used for sharpening tools or grinding grain. To work the grindstone, you need to bend over it with your nose close to the stone.

Nose Grindstone One's Focus Working Work Hard Happy