diamond

diamond
noun

a precious stone consisting of a clear and colourless crystalline form of pure carbon, the hardest naturally occurring substance
钻石
■a tool with a small stone of such a kind for cutting glass
（带有钻石刀头、用于切割玻璃的）割刀，金刚钻
■in extended and metaphorical use with reference to the brilliance, form, or hardness of diamonds
用来指钻石的光芒（或形状、硬度）
the air glitters like diamonds.
空中闪烁着钻石般的光芒。
■(a diamond)(Brit. informal)an excellent or very special person or thing
(英，非正式)出色（或特别）的人（或物），出众的人（或物）
Fred's a diamond.
弗雷德是个很优秀的人。
Diamonds occur in some igneous rock formations (kimberlite) and alluvial deposits. They are typically octahedral in shape but can be cut in many ways to enhance the internal reflection and refraction of light, producing jewels of sparkling brilliance. Diamonds are also used in cutting tools and abrasives
[often as modifier]a figure with four straight sides of equal length forming two opposite acute angles and two opposite obtuse angles; a rhombus
斜方形；菱形
decorative diamond shapes.
装饰用的菱形。
■(diamonds)one of the four suits in a conventional pack of playing cards, denoted by a red figure of such a shape
方块（扑克牌的四种花色之一）
■a card of this suit
方块牌
she led a losing diamond.
她率先出了一张导致输局的方块牌。
■the area delimited by the four bases of a baseball field, forming a square shape
（棒球场的）内场
■a baseball field
棒球场
■[usu. as modifier]a railway crossing in which two tracks cross over each other at an acute angle
两条铁路成锐角交叉的交汇处，菱形铁路道口
diamond crossings.
菱形交叉。

常用词组
diamond cut diamond

used to describe a situation in which a sharp-witted person meets their match
棋逢敌手，势均力敌

diamond in the rough

North American term for rough diamond
(北美)。同 rough diamond

派生
diamondiferous
[-ˈdɪf(ə)rəs]
adjective
语源

Middle English: from Old French diamant, from medieval Latin diamas, diamant-, variant of Latin adamans (see adamant)

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