Definitions of diamond:
- noun: a playing card in the minor suit of diamonds
- noun: a transparent piece of diamond that has been cut and polished and is valued as a precious gem
- noun: very hard native crystalline carbon valued as a gem
- noun: the area of a baseball field that is enclosed by 3 bases and home plate
- noun: the baseball playing field
- name: A surname (common: 1 in 12500 families; popularity rank in the U.S.: #1648)
- name: A female given name (rare: 1 in 50000 females; popularity rank in the U.S.: #2283)