meaning
from the start all over again (처음부터 다시)
example
It seems that she has failed at a task and has to start all over again.
(그의 일이 잘못되어서 처음부터 다시 해야될것 같애.)
It looks like my plan to kill the weeds in the garden has failed. Back to the drawing board.
(정원의 잡초를 없애려던 계획이 완전 망친것 같애. 처음부터 다시 계획을 세워봐야 겠어.)
A: How is your science project coming along? (너, 과학숙제 어떻게 되어가니?)
B: It didn't work at all! (전혀 진척이 없어.)
A: Well, back to the drawing board. (처음부터 다시 시작해야 겠구나.)
exercise
이번 해외 여행계획이 완전 틀어졌어. 처음부터 다시 해야겠어.
(All the plans for our tour abroad screwed up, we have to go back to the drawing board.)
background
The drawing board is the place where a designer begins with an idea
and builds it into a plan. If your plan is not successful, then you have to
go back to the drawing board to start again and think up a new plan.