noun
sudoku
suu-DOH-koo
noun
1
A number puzzle played on a 9x9 grid, where each row, column, and smaller 3x3 box must contain the digits 1 to 9 exactly once.
"She does a sudoku every morning with her coffee."
How to Use Sudoku
Learner’s notesIn plain EnglishA logic puzzle where you fill a grid with numbers so none repeat in any row, column, or box.
Word Forms
sudokus plural
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She does a _____ every morning with her coffee.
Etymology
Borrowed from Japanese sudoku, itself shortened from a longer phrase meaning "the numbers must be single" (i.e. each digit appears only once).