chock-a-block, to be

chock-a-block, to be

Also, chock-full. To be very full, tightly jammed together. It was originally a nineteenth-century nautical term, describing the blocks of a tackle drawn so close that they touched. In time it was transferred to objects, people—just about anything very crowded. W. Somerset Maugham used it, “The city’s inns were chock-a-block and men were sleeping three, four and five to a bed” (Then and Now, 1946). The synonymous “chock-full” is much older, dating from the fifteenth century, and actually may be used more often, in such locutions as, “Her paper was chock-full of typos.”
The Dictionary of Clichés by Christine Ammer
See also:
  • full circle, come
  • full of years
  • chock
  • chock full of
  • chock full of (something)
  • be full of beans
  • glass
  • seize the moment
  • full up
  • on a full stomach