a very hard crystalline carbon, or a piece of it, which is highly valued as a precious stone and used industrially as an abrasive and in rock drills
I never hated a man enough to give him diamonds back — Zsa Zsa Gabor
a square or rhombus orientated so that the diagonals are horizontal and vertical
a playing card marked with one or more red diamond-shaped figures
(in pl, but treated as sing. or pl) the suit comprising cards identified by this figure
the entire playing field or the area enclosed by the bases in baseball
diamondiferous /-ʹdif(ə)rəs/ adj
[Middle English diamaunde via early French diamant from late Latin diamant-, diamas, alteration of Latin adamant-, adamas, hardest metal, diamond, ultimately from Greek]