<p><strong>Noun:</strong></p><ul><li>A small, usually red or black disk of plastic or wood, used in playing checkers.</li><li>A game played by two persons, each with 12 playing pieces, on a checkerboard.</li><li>Loosely stacked brickwork in a regenerative furnace through which furnace gases and incoming air are passed in turn.</li><li>A checkered pattern.</li><li>One of the squares of a checkered pattern.</li></ul><p><strong>Verb:</strong></p><ul><li>To mark like a checkerboard.</li><li>To diversify in color; variegate.</li><li>To diversify in character; subject to alternations.</li></ul>