- Squeezed together; jammed: The cheering fans were chock-a-block in the stands.
- Completely filled; stuffed: “I recommend the north shore chowder, chockablock with pieces of seasonal fish” ( Charles Monaghan )
- Nautical Drawn so close as to have the blocks touching. Used of a ship's hoisting tackle.
Origin of chock-a-blockAlteration (influenced by chock ) of block-a-block block a- 2 block