Answer: threshold

AnswerCrossword Clue
THRESHOLDEntrance demarcation
THRESHOLDBeginning point.
THRESHOLDSill.
THRESHOLDPoint of entry
THRESHOLD... Test-Ban Treaty: 1974
THRESHOLDStarting point
THRESHOLDDoorsill
thresholdentrance or beginning
thresholddoorway sill
thresholdthe sill of a house door; the place or point of entering