checker

(chĕkˈər)

1. a. One, such as an inspector or examiner, that checks.
   b. One that receives items for temporary safekeeping or for shipment: a baggage checker.
2. a. checkers (used with a sing. verb) A game played on a checkerboard by two players, each using 12 pieces.
   b. One of the round flat pieces used in this game.
3. a. A pattern of checks or squares.
   b. One of the squares in such a pattern.
4. A cashier.

1. To mark with a checked or squared pattern.
2. To diversify (something) in color, shading, or character; variegate.