A crossword (or crossword puzzle) is a word game consisting of a grid of black and white squares, into which solvers enter words or phrases ("entries") crossing each other horizontally ("across") and vertically ("down") according to a set of clues. a puzzle in which the solver deduces words suggested by numbered clues and writes them into corresponding boxes in a grid to form a vertical and horizontalYou won't just learn new words when you complete crossword puzzles regularly; you'll also learn new things in general, especially if you work with other people to solve difficult puzzles. Most crossword puzzles contain a wide variety of trivia. crossword puzzle, crossword game, word game, brain training, vocabulary, trivia, word puzzle, cognitive skills, word skills, solve crossword, wordplay, general knowledge, mental exercise, puzzle game, crossword quest, 3D crossword