touch-and-go I. \| ̷ ̷ ̷ ̷| ̷ ̷\adjective Etymology:touch and go 1.: marked by restlessness or casualness of movement or execution < touch-and-go dialogue > 2.: precarious, hairbreadth < mule trains to haul your equipment the two touch-and-go miles — Horace Sutton > II. noun : an airplane landing followed immediately by application of power and a takeoff and usually executed as one of a series for practice at landings