crossword -
A word puzzle in which interlocking words are entered usually horizontally and vertically into a grid based on clues given for each word.
Wikipedia
A crossword is a word puzzle that normally takes the form of a square or rectangular grid of white and shaded squares. The goal is to fill the white squares with letters, forming words or phrases, by solving clues which lead to the answers. In languages which are written left-to-right, the answer words and phrases are placed in the grid from left to right and from top to bottom.
OmegaWiki Dictionary
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crossword Word puzzle consisting of a grid of black and white squares, where the goal is to fill the white squares with letters, to form words in horizontal and vertical directions that should cross consistently.
