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Klon·dike 1 (klŏndīk)
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A region of Yukon Territory, Canada, just east of Alaska and traversed by the Klondike River, about 160 km (100 mi) long. Gold was discovered here in August 1896, leading to the gold rush of 1897-1898 in which more than 30,000 people sought their fortune in the frozen north.

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
 
Klon·dike 2 (klŏndīk)
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n.
A form of solitaire in which 28 cards are laid out in seven piles and the player moves through the remainder of the deck one or three cards at a time. The objective is to remove the aces and build sequential stacks sorted by suit ascending up to king.

[From KLONDIKE1 (perhaps because the game became popular around the time of the Klondike gold rush).]

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
 

Indo-European & Semitic Roots Appendices

    Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:

    Indo-European Roots

    Semitic Roots

    The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.