The British meaning of lunting is to walk whilst smoking a pipe. Lunting is used by pipe smokers as a means of relaxation or [easing] stress. In addition Lunting can also mean emitting smoke or steam or the act of lighting a fire, torch or tobacco pipe.
Dating from around 1540 - 1550, the origin is believed to be from the Dutch word lont meaning a slow match or fuse or possibly the Middle [Low German] lonte meaning [a wick].