nonogram
nounUK /ˈnɒnəɡɹæm/ · US /ˈnɑːnəɡɹæm/
Etymology Coined by James Dalgety in 1990, from the puzzle inventor's name (Non Ishida) and diagram.
1
Games A puzzle in which cells of a grid must be filled or left blank, according to sets of numbers given at the side of the grid, to reveal a hidden picture.