American Heritage® Dictionary of the English Language, Fourth Edition
- n. Mail that is recorded by the post office when sent and at each point on its route so as to assure safe delivery.
- n. a special type of mail that provides more control than regular mail.
- n. mail that is registered by the post office when sent in order to assure safe delivery
“Then, with a strengthy fling of his arm, he hurled the precious bag of registered mail over the rim of the precipice, far down into the canyon, two hundred feet below.”
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