·noun One of a suit of playing cards, stamped with the figure of a diamond.
II. Diamond ·noun The infield; the square space, 90 feet on a side, having the bases at its angles.
III. Diamond ·noun A pointed projection, like a four-sided pyramid, used for ornament in lines or groups.
IV. Diamond ·adj Resembling a diamond; made of, or abounding in, diamonds; as, a diamond chain; a diamond field.
V. Diamond ·noun The smallest kind of type in English printing, except that called brilliant, which is seldom seen.
VI. Diamond ·noun A precious stone or gem excelling in brilliancy and beautiful play of prismatic colors, and remarkable for extreme hardness.
VII. Diamond ·noun A geometrical figure, consisting of four equal straight lines, and having two of the interior angles acute and two obtuse; a rhombus; a lozenge.