back to the drawing board
US /bæk tu ðə ˈdrɔɪŋ bɔrd/
UK /bæk tu ðə ˈdrɔɪŋ bɔrd/

1.
voltar à estaca zero, recomeçar
to start again on a plan or idea because the previous one has failed
:
•
Our first attempt failed, so it's back to the drawing board.
Nossa primeira tentativa falhou, então é voltar à estaca zero.
•
The client rejected the design, so we're back to the drawing board.
O cliente rejeitou o design, então estamos de volta à estaca zero.