In AutoCAD, What are grips?

It is used to easily edit the objects.

• Grips are the small squares that appear when objects are selected with the crosshairs directly from the command prompt.
• An unselected grip is one that has not yet been picked with the cursor, but is an item in the current selection set (it is highlighted).

Grips are small, solid-filled squares that are displayed at strategic points on objects that you have selected with a pointing device

Both of You are correct, the Grips are are small, solid-filled squares that are displayed at strategic points on objects that you have selected with a pointing device and used to edit the objects.