Noun

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