A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z

A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z

Cis forChock

Photo of a chock under a wheel

List of devices

A chock is a piece of wood or metal used to hold something steady. Chocks are most often used against wheels to stop a vehicle from rolling away.

Scott Minneman / CC BY-SA