Meanings
How to pronounce "break the back of":
AU
To complete the greater part of (a project).
Example: "I've broken the back of painting the shed – I'll finish it after lunch."
(Can we verify(+) this sense?) To overburden (a person).
Example Sentences
1
He worked late into the night to break the back of the project.
2
The new sales strategy helped us break the back of our sales target.
3
The discovery of a vaccine could break the back of the pandemic.
4
She managed to break the back of the difficult crossword puzzle.
5
With a strong start to the game, the team was able to break the back of their opponent's defense.