NOUN (2)

1. a region in northwestern Canada where gold was discovered in 1896 but exhausted by 1910;

2. a form of solitaire that begins with seven piles of cards with the top cards facing up; descending sequences of cards of alternating colors are built on these piles; as aces become available they are placed above the seven piles; the object is to build sequences in suit from ace to king as the remaining cards are dealt out one at a time;

WordNet (r) 3.0 (2006):

Klondike
    n 1: a region in northwestern Canada where gold was discovered
         in 1896 but exhausted by 1910
    2: a form of solitaire that begins with seven piles of cards
       with the top cards facing up; descending sequences of cards
       of alternating colors are built on these piles; as aces
       become available they are placed above the seven piles; the
       object is to build sequences in suit from ace to king as the
       remaining cards are dealt out one at a time