A shift knob is a handle that you use to change gears in a car or vehicle. It helps you control the movement of the gears when driving. Full definition
The shifter paddles are mounted on the sides of the wheel, and a performance leather shift knob gets some double stitching goodness. (topspeed.com)
Even more features are the heated, leather wrapped steering wheel, heated leather front seats, and a heated leather wrapped shifter knob. (libertyjeepchrysler.com)
The leather wrapped steering wheel, gear shift knob along with hand brake lever handle and piano black finish on center console gives the cabin a decent look. (cardekho.com)