词典释义：
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
钻石般的光芒（或形状、硬度）
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the air glitters like diamonds .空中闪烁着钻石般的光芒。
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〈英，非正式〉 出色（或非常特别）的人（或物）
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Fred's a diamond .弗雷德是个很优秀的人。
[often as modifier]a figure with four straight sides of equal length forming two opposite acute angles and two opposite obtuse angles; a rhombus
菱形
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decorative diamond shapes .装饰用的菱形。
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方块（扑克牌的四种花色之一）。
a card of this suit
方块牌
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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
菱形铁路道口
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diamond crossings .菱形交叉。
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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 forROUGH DIAMOND ． 〈北美〉 同ROUGH DIAMOND ．
"Middle English： from Old French
