
1) English card game 2) Very glum and quiet game 3) Whist family of card game
Found on
https://www.crosswordclues.com/clue/solo-whist

Solo Whist, sometimes known as simply Solo, is a trick-taking card game whose direct ancestor is the 17th-century Spanish game Ombre, based on the English Whist. Its major distinctive feature is that one player often plays against the other three. However, players form temporary alliances with two players playing against the other two if `Prop an....
Found on
http://en.wikipedia.org/wiki/Solo_whist

• A card game played with the full pack ranking as at whist, each player declaring for which of seven different points he proposes to play.
Found on
http://thinkexist.com/dictionary/meaning/solo_whist/
Solo whist A card game played with the full pack ranking as at whist, each player declaring for which of seven different points he proposes to play.
Found on
http://www.encyclo.co.uk/webster/S/142

Solo Whist is a card game, a modification of the American game of Boston or whist. It is played by four individual players, who may form temporary partnerships, with a full pack of fifty-two cards. It was brought to London around 1852.
Found on
http://www.probertencyclopaedia.com/browse/OS.HTM
No exact match found.