Wedge That Secures a Portal in Place
Puzzle 6 of Groups of Three Easy Pack
Question is: Wedge That Secures a Portal in Place
and the answer is: DOORSTOP
Word Meaning:
DOORSTOP — Any device or object used to halt the motion of a door, as a large or heavy object, a wedge, or some piece of hardware fixed to the floor, door or wall.
Definitions from Wiktionary.