From Longman Dictionary of Contemporary Englishchock-fullˌchock-ˈfull adjective [not before noun] informalFULL completely full of people or thingschock-full of a pond chock-full of weeds
Examples from the Corpus
chock-full• For Hugh the world was almost chock-full of traitors and liars and fools.chock-full of• The bean soup, chock-full of smoked ham, was delicious.Origin chock-full (1300-1400) Probably from → CHOKE1 