- a small square, as on a chessboard
- a pattern of such squares
- [pl., with sing. v.] a game played on a checkerboard by two players, each with twelve round, flat pieces to move
- any of these pieces
- service tree
Origin of checkerMiddle English cheker, chessboard, aphetic from escheker from Old French eschekier from Medieval Latin scaccarium: see check
- to mark off in squares, or in patches of color
- to break the uniformity of, as with varied features or events, with changes in fortune, etc.