to break one's back
break
breɪk
breik
<i>one's</i>
wʌnz
vanz
back
bæk
bāk

Definición y significado de "break one's back"en inglés

to break one's back
01

to work as hard as one can to achieve a particular result 

to [break] {one's} back definition and meaning
modismo
informal
Ejemplos
She broke her back to keep the business alive during the crisis. 
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