Definition of chocks:
(n) :
Any object used as a wedge or filler, especially when placed behind a wheel to prevent it from rolling.
(v) :
(transitive) To stop or fasten, as with a wedge, or block; to scotch.
(n) :
(nautical) Any fitting or fixture used to restrict movement, especially movement of a line; traditionally was a fixture near a bulwark with two horns pointing towards each other, with a gap between where the line can be inserted.
(v) :
(nautical) To insert a line in a chock.
(adv) :
(nautical) Entirely; quite.
(v) :
To make a dull sound.