Checker /(chĕk"ẽr)/

1. One who checks.

imp. & p. p. Checkered; p. pr. & vb. n. Checkering

1. To mark with small squares like a checkerboard, as by crossing stripes of different colors.
2. To variegate or diversify with different qualities, colors, scenes, or events; esp., to subject to frequent alternations of prosperity and adversity.

   Our minds are, as it were, checkered with truth and falsehood.

1. A piece in the game of draughts or checkers.
2. A pattern in checks; a single check.
3. Checkerwork.