knock out of

knock something out of someone

to beat someone until something emerges or dissipates. Max knocked the truth out of the spy. Lefty knocked the story out of Max.
See also: knock, of, out

knock something out of something

to beat or knock on something until something comes out. Timmy knocked the stuffing out of his pillow. Someone knocked the coins out of my piggy bank.
See also: knock, of, out