A box or case in which official despatches are carried by a special messenger.(noun)
The Century Dictionary (Public Domain)
Use "despatch-box" in a sentence
"He sleeps with the keys of his despatch-box on a string round his neck."
"He remained in a standing position, supporting his crooked frame by his hand, which he leaned on a despatch-box; he glared on me steadily with his wild phosphoric eyes, from under the dark brows I have described to you, now corrugated in lines indescribably stern."
"His fury was excited to a pitch that was very nearly ungovernable; and after it had exhibited itself in the way I have said, Captain Lake opened a little despatch-box, and took therefrom"