Dead Letterbox Edit Meaning

1.

A prearranged place for a swap or drop of information or goods. Particularly common usage with Spies or drug dealers.

"The Microfilm was left at the dead letterbox as arranged. We can now release the prisoner."

See spy, spies, swap, drop, letterbox, dead

2.

Where a letter ends up when it is undelieverable, by postaldefinition], the dead letterbox.

I can't deliever this letter so stick it in the dead letterbox.

See dead letter, postal