名詞 copper:

1. a ductile malleable reddish-brown corrosion-resistant diamagnetic metallic element; occurs in various minerals but is the only metal that occurs abundantly in large masses; used as an electrical and thermal conductor
   同義詞：Cu, atomic number 29
2. a copper penny
3. uncomplimentary terms for a policeman
   同義詞：bull, cop, fuzz, pig
4. a reddish-brown color resembling the color of polished copper
   同義詞：copper color
5. any of various small butterflies of the family Lycaenidae having coppery wings

動詞 copper:

1. coat with a layer of copper

1. Copper conducts electricity better than iron does.
   銅的導(dǎo)電性比鐵強(qiáng)。
2. Copper and gold are both metals.
   銅和金都是金屬。
3. Copper has less resistance than lead.
   銅的電阻比鉛的小。
4. What color is copper sulfate solution?
   硫酸銅溶液是什么顏色？
5. Ornamental copper pans hung on the wall.
   墻上掛著裝飾性的銅盤。
6. Brass is formed by the fusion of copper and zinc.
   黃銅是由銅和鋅熔合制成的。
7. Brass is an alloy of copper and zinc.
   黃銅是銅和鋅的合金。
8. The chemical symbol for copper is "Cu".
   銅的化學(xué)符號是Cu。

copper

n.（名詞）
Symbol Cu A ductile, malleable, reddish-brown metallic element that is an excellent conductor of heat and electricity and is widely used for electrical wiring, water piping, and corrosion-resistant parts, either pure or in alloys such as brass and bronze. Atomic number 29; atomic weight '3.54; melting point ,083=C; boiling point 2,595=C; specific gravity 8.9'; valence , 2.See table at element
符號 Cu 銅：一種有韌性、可延展的紅棕色金屬元素，是熱和電的極好導(dǎo)體，廣泛用于電線、水管及防腐蝕零件中，其形式可以是純銅也可以是黃銅或青銅合金。原子序數(shù)為29；原子量為'3.54；熔點(diǎn),083=C；沸點(diǎn)2,595=C；比重8.9'；原子價為,2參見 element
A coin, usually of small denomination, made of copper or a copper alloy.
銅幣：用銅或銅的合金制成的硬幣，通常為小面值
Chiefly British A large cooking pot made of copper or often of iron.
【多用于英國】 金屬鍋：用銅或鐵鑄成的大煮鍋
Any of various small butterflies of the subfamily Lycaeninae, having predominantly copper-colored wings.
銅色（?。┗业阂环N灰蝶亞科的小蝴蝶，翅膀主要為銅色
Color A reddish brown.
【色彩】 紫銅色：偏紅的褐色
v.tr.（及物動詞）
cop.pered,cop.per.ing,cop.pers
To coat or finish with a layer of copper.
鍍銅于：給…包銅或鍍銅
Slang To bet against, as in faro.
【俚語】 下賭注于：對…下賭注，如在法羅牌中

來源：
Middle English coper
中古英語 coper
from Old English
源自 古英語
from Late Latin cuprum
源自 后期拉丁語 cuprum
from Latin Cyprium (aes) [Cyprian (metal)]
源自 拉丁語 Cyprium (aes) [塞浦路斯的（金屬）]
from Cyprius [of Cyprus]
源自 Cyprius [塞浦路斯的]
from Greek Kuprios
源自 希臘語 Kuprios
from Kupros [Cyprus]
源自 Kupros [塞浦路斯]

【引伸】
cop.pery
adj.（形容詞）

---------------另--------------
copper
copper 2

n.Slang （名詞）【俚語】
A police officer.
警察

來源：
From cop
源自 cop