diamond

noun

1. (uncountable)A glimmering glass-like mineral that is an allotrope of carbon in which each atom is surrounded by four others in the form of a tetrahedron.

   “The saw is coated with diamond.”

   “synthetic diamond”

2. (countable, uncountable)A gemstone made from this mineral.

   “The dozen loose diamonds sparkled in the light.”

   “Although there are dozens of different types of gems, among the best known and most important are diamond, ruby and sapphire, emerald and other gem forms of the mineral beryl, chrysoberyl, tanzanite, tsavorite, topaz and jade.”

   “she is wearing small diamond studs in her earlobes. the kind u wear if u’re a modest person & u don’t want to wear anything that could catch on stuff, or be a health risk in a hospital – but u’re still someone who cares.”

3. (countable, uncountable)A diamond ring.

   “What a beautiful engagement diamond.”

4. (countable, uncountable)A very pale blue color.
5. (countable, uncountable)Sable, when blazoning by precious stones.

   “Elphingston. Pearl a Chevron Diamond between three Boars Heads Eraz'd Ruby, arm'd of the first. / Eymouth. Diamond a Lyon Rampant Pearl, on a Canton of the 2d, a Cross Ruby.”

   “The Field is Ruby, on a Bend Topaz, three Martlets Diamond. The Armes of the most Noble and Puissant Lord, Edward Brabazon, Earl of Meath, and Baron of Atherdee in the Kingdom of Ireland. His Lordship's Atchievements are Quarterly of sixteen Coats. 1. Brabazon, as above. 2. Diamond, on a Chevron between three Pickaxes Pearl, as many Mullets Ruby, by the Name of Mosley. 3. Saphire, ten Bezants, 4, 3, 2, 1, by the Bisset.”

   “Pearl, an Eagle, Diamond, between three Crosses Patee, Ruby, for Morrys.”

6. (countable, uncountable)Something that resembles a diamond.
7. (countable, uncountable)A rhombus, especially when oriented so that its longer axis is vertical.

   “An adder writhes out of the bush, I can see the diamonds on its back; it shrithes across the sandy soil, and bites the right foot of one of the knights.”

8. (countable, uncountable)A polyiamond consisting of two triangles.
9. (countable, uncountable)The entire field of play used in the game.
10. (countable, uncountable)The infield of a baseball field.

    “The teams met on the diamond.”

11. (countable, uncountable)A card of the diamonds suit.

    “I have only one diamond in my hand.”

12. (Pennsylvania, Western, countable, uncountable)A town square.
13. (countable, dated, uncountable)The size of type between brilliant and pearl, standardized as 4+¹⁄₂-point.

adj

1. (not-comparable)Made of, or containing diamond, a diamond or diamonds.

   “He gave her diamond earrings.”

   “But in the diamond jubilee state coach – this one comes with both suspension and air conditioning – the queen’s hands were folded calmly in her lap.”

2. (not-comparable)Of, relating to, or being a sixtieth anniversary.

   “Today is their diamond wedding anniversary.”

3. (not-comparable)Of, relating to, or being a seventy-fifth anniversary.

   “Today is their diamond wedding anniversary.”

4. (not-comparable, slang)First-rate; excellent.

   “He's a diamond geezer.”

verb

1. To adorn with or as if with diamonds.

name

1. A female given name from English of modern usage, from the name of the gem.
2. A surname from German or Irish.

   “Some experts, such as geographer Jared Diamond in his 2005 book, “Collapse,” used Easter Island as a cautionary tale of how the exploitation of limited resources can result in catastrophic population decline, ecological devastation and the destruction of a society through infighting.”

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