nose to grindstone

Since he came down that escalator to announce his campaign, he has relied on weaponizing racism, blaming some "other" to his aggrieved white base, without the corresponding push to put nose to grindstone.

Enlisting the help of the Twitter—always eager to jump behind a random cause— Nanni put his nose to grindstone and started piling up the retweets.

At last year's Kentucky Derby, he saddled Cavonnier, who lost by a nose to Grindstone--trained by Lukas.

During academic hours, the Columbia program is strictly nose to grindstone.