Answer: chocks

AnswerCrossword Clue
CHOCKSWheel wedges
CHOCKSWedges
CHOCKSWedgy stoppers
chocksA support on which a rounded structure, such as a cask or the hull of a boat, may be placed to keep it steady
chocksCHOCK, to secure with a block or wedge
chocksA wedge or block placed against a wheel or rounded object, to prevent it from moving
chocksA fitting with a gap at the top, through which a rope or line is run