keep your nose to the grindstone
US /kiːp jʊər noʊz tə ðə ˈɡraɪndˌstoʊn/
UK /kiːp jʊər noʊz tə ðə ˈɡraɪndˌstoʊn/
1.
to work hard and continuously at a task
:
•
If you want to succeed, you need to keep your nose to the grindstone.
•
She's been keeping her nose to the grindstone all semester to get good grades.