diamond

noun

1.
a transparent piece of diamond that has been cut and polished and is valued as a precious gem
hardhirst makeable
2.
very hard native crystalline carbon valued as a gem
athamans hardore adamant
3.
a parallelogram with four equal sides; an oblique-angled equilateral parallelogram
rhomb rhombus
4.
a playing card in the minor suit that has one or more red rhombuses on it
5.
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