Definition of the earth in English:

the earth

phrase

British
  • A very large amount.

    ‘her hat cost the earth’
    • ‘We have a council that promises the earth but provides road calming and roundabouts.’
    • ‘He stressed it didn't have to cost the earth to cook fresh locally grown produced.’
    • ‘Why are we too scared to ask for high standards on a job that's costing us the earth?’
    • ‘Yet he has a mortgage, a young family, and does not want to pay the earth for it.’