a place from which an enterprise or expedition is launched; "one day when I was at a suitable jumping-off place I decided to see if I could find him"; "my point of departure was San Francisco
A jumping-off point or a jumping-off place is a place, situation, or occasion which you use as the starting point for something. Lectoure is a bustling market town and the best jumping-off point for a first visit to Le Gers. a place to start from, especially at the beginning of a journey