Work (one's) fingers to the bone American British phrase
To work so hard that one's fingers are torn to the bone. A metaphorical saying refers to someone who did an extreme amount of work.
Josh worked his fingers to the bone so that he can put food on the table and pay the bills for his family.
everything I need right at the moment is a nap, I have worked my fingers to the bone all day long.
To work extremely hard
To work extremely hard to achieve something
1. To use a great amount of effort or energy in order to do or complete something
2. To trash or harass someone to do or finish something
If you work your butt off, you work really hard.
1.To work really hard
2. To urge someone to complete something by nagging, harassing or upbraiding
3. If someone bust your ass, they defeat you in a decisive way.
4. To hurt someone or beat someone up
5. To make fun of someone
The verb "work" should be conjugated according to its tense.
This expression dates from the nineteenth century.