Idiom medium 07 / 51
“chock-full”
i · The common misuse One wrong form
ii · What it meansTwo lines, no filler
'Chock-full' = packed tight. 'Chalk' is a material; 'chock' is a wedge.
iii · Memory hookKeep this one
Chock like 'chock-a-block'. Nothing to do with chalk.