словарь польский - английский
- 
ból krzyża lub pleców на английском языке:
1. 
backache
I have a backache.
She often suffers from backache.
I've got a backache.
When I had backache, I couldn't get out of bed for a week!
I've got terrible backache.
My mother has got a backache
His backache left him lurching along with leaden legs.
Английский слово "ból krzyża lub pleców«(backache) встречается в наборах:
unit 3 A good job część 2Unit 4 Body and mind
2. 
back pain
I've been having back pains for twenty years.
back pain or back pain 