1. knuckle down - Verb
2. knuckle down - Phrase
work very hard, like a slave
Source: WordNetI think I'm done gunnin to get closer. To some imagined bliss. I gotta knuckle down. And just be ok with this. Ani DiFranco
I like to knuckle down and get on with my job. I'll make mistakes, I'm bound to, but I'll write them down and I'll learn from them. Paul Ince
I knuckle down with my demons, and with my weaknesses. Carlos Santana
I do think that some of us began to realize that this was going to be a long struggle that was going to go on for decades, and you'd have to knuckle down. A lot of people in our generation did that. They didn't drop out and run away. Julian Bond
Oddly, I do have a problem with authority. I find it very difficult to knuckle down and follow rules. Which are the classic symptoms of someone who has a troubled relationship with their father. And yet, I never had a problem with my father. Toby Young
He preferred to knuckle down to preparations for the assignment at hand and his new status in life. Source: Internet