Definition of "thousandfold"

[T]he fresh brave school-life, so full of games, adventures, and good fellowship, so ready at forgetting, so capacious at enjoying, so bright at forecasting, outweighed a thousandfold their troubles with the master of their form, and the occasional ill-usage of the big boys in the house.

1857, [Thomas Hughes], “The War of Independence”, in Tom Brown’s School Days. […], Cambridge, Cambridgeshire: Macmillan & Co., part I, page 185

Looking into his eyes, you seemed to see there the yet lingering images of those thousand-fold perils he had calmly confronted through life.

1851 November 14, Herman Melville, “Knights and Squires”, in Moby-Dick; or, The Whale, 1st American edition, New York, N.Y.: Harper & Brothers; London: Richard Bentley, page 125