solitaire
noun
[ ˈsɒlɪtɛː ]
• any of various card games played by one person, the object of which is to use up all one's cards by forming particular arrangements and sequences.
• a game for one player played by removing pegs one at a time from a board by jumping others over them from adjacent holes, the object being to be left with only one peg.
• a diamond or other gem set in a piece of jewellery by itself.
• "a diamond solitaire"
• either of two large extinct flightless birds related to the dodo, found on two of the Mascarene Islands until they were exterminated in the 18th century.
• a large American thrush with mainly grey plumage and a short bill.
Origin:
early 18th century: from French, from Latin solitarius (see solitary).