(American football) a play in which a defensive player is allowed to cross the line of scrimmage and then blocked off as the runner goes through the place the lineman vacated. Synonym:trap play.
... bottles, comb, iron bin, fodder rack, meal ark or box, oil flask, oven rake, dung shovel; altogether a very complete list, the compiler of which ends by saying that the reeve ought to neglect nothing that should prove useful, not even a mousetrap, nor even, what is less, a peg ... — A Short History of English Agriculture • W. H. R. Curtler