valley of death

Etymology
Probably derived from the Old Testament, Psalm 23: "valley of the shadow of death".

Noun

 * 1)  Death; or a place or period where death is impending.
 * 2)  A place of great danger.
 * 3)   The phase of a startup business beginning with the entrepreneur's fulltime commitment to it and ending when the business has achieved sustainable cash flow.
 * 1)   The phase of a startup business beginning with the entrepreneur's fulltime commitment to it and ending when the business has achieved sustainable cash flow.