
1) American magazine 2) Jacks 3) Jackstones
Found on
https://www.crosswordclues.com/clue/knucklebones

Knucklebones, or Jacks, is a game of very ancient origin, usually played with five small objects. Originally the `knucklebones` (actually the astragalus: a bone in the ankle, or hock) were those of a sheep, which were thrown up and caught in various manners. Modern knucklebones consist of six points, or knobs, proceeding from a common base, and .....
Found on
http://en.wikipedia.org/wiki/Knucklebones
[magazine] Knucklebones was a bi-monthly United States-based magazine, focused on providing news and reviews of board games and card games. The magazine included some puzzles and contests, typically with a game-oriented theme, and also included puzzles such as Sudoku and crosswords. Knucklebones won praise on the board game forum BoardGameG...
Found on
http://en.wikipedia.org/wiki/Knucklebones_(magazine)
No exact match found.