break the back of

listen to the pronunciation of break the back of
English - Turkish
(deyim) İşin çoğunu ya da zor kısmını tamamlamak
(deyim) en zor engeli aşmak
(deyim) en zor kısmını başarmak
English - English
To achieve the greater part of some project

I've broken the back of painting the shed - I'll finish it after lunch.

break the back
work very hard, put in great effort