gripper

plural grippers

1. A person who or thing which grips something.

   In a method for guiding a thread onto an empty reel after a first reel in a continuously operating spooler has become full, utilizing a moving finger on the spooler in cooperation with a gripper rotating with the empty reel […]

   1998, Official Gazette of the United States Patent and Trademark Office, page 1061

2. A cover on a handle that makes it easier to grip.
3. ball gamesA rubber or other material attached to a curling shoe to improve traction on the ice.
4. slangrail transportA ticket collector.
5. computingA visual component on a window etc. enabling it to be resized and/or moved.

   To move the options bar from its default location at the top of the screen to a new location, click the gripper on the option bar's left edge and drag it to its new location.

   2004, Micah Laaker, Christopher Schmitt, Adobe Photoshop CS in 10 Simple Steps or Less, page 43

6. plural normallyslangA foot.

   Put those grippers away!