A alpha base basis beginning blast-off border line bound boundary boundary condition boundary line bourn break boundary breakoff point ceiling circumscription commencement compass confine creation cutoff cutoff point cutting edge dawn deadline delimitation determinant division line edge end establishment extremity finish floor flying start foundation fresh start frontier hedge high-water mark institution interface jump-off kick-off leading edge limen limit limitation limiting factor line line of demarcation line of departure low-water mark lower limit march mark mete new departure oncoming onset opening origin origination outbreak outset point of departure port of embarkation running start send-off setting in motion setting-up square one start start-off starting gate starting line starting place starting post take-off takeoff target date term terminal date terminus threshold time allotment upper limit