sealed book

American  

noun

1. something beyond understanding and therefore unknown.

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sealed book British  

noun

1. another term for closed book

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Etymology

Origin of sealed book

First recorded in 1810–20

Example Sentences

See Examples For:

sealed book

He had been given a practical object lesson concerning the other side of life, the decent side, which, up to now, had been pretty much of a sealed book to this pronounced bully of Fairfield.

From Woodcraft or, How a Patrol Leader Made Good by Douglas, Alan

With the letter open in his hand, he found it as much a sealed book to him as ever.

From The Chainbearer Or, The Littlepage Manuscripts by Cooper, James Fenimore

To the robustious intelligence of the honor man, it must be admitted, the finer enthusiasm of scientific culture is likely to be a sealed book.

From An American at Oxford by Corbin, John

Never before had I realised so fully that he was the possessor of gifts the nature of which was as a sealed book to the common mortal.

From Mrs. Fitz by Snaith, J. C.

Even distant Europe was no sealed book to them.

From The Story of the Rome, Watertown, and Ogdensburg RailRoad by Hungerford, Edward