a transparent piece of diamond that has been cut and polished and is valued as a precious gem
very hard native crystalline carbon valued as a gem
a parallelogram with four equal sides; an oblique-angled equilateral parallelogram
a playing card in the minor suit that has one or more red rhombuses on it; he led a small diamond; diamonds were trumps'
the area of a baseball field that is enclosed by 3 bases and home plate
the baseball playing field