WordWeb Online

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

Derived forms: diamonds

Type of: athletic field, atomic number 6, C, carbon, field, gem, jewel, parallelogram, parcel, parcel of land, piece of ground, piece of land, playing area, playing card, playing field, precious stone, tract, transparent gem

Part of: ballpark [N. Amer], minor suit, park

Encyclopedia: Diamond, OH