| Copper | any of various small butterflies of the family Lycaenidae having copper colored wings |
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| Copper | a reddish brown the color of polished copper |
| Copper | (informal) uncomplimentary terms for a policeman |
| Copper | a copper penny |
| Copper | a ductile malleable reddish-brown corrosion-resistant diamagnetic metallic element |
| Copper | coat with a layer of copper |
| Copper | variety of European beech with shining purple or copper-colored leaves |
| Copper | a reddish brown the color of polished copper |
| Copper | having the color of copper |
| Copper | a heavy gray mineral that is an ore of copper |
| Copper | a mine where copper is dug from the ground |
| Copper | enlargement of the nose with dilation of follicles and redness and prominent vascularity of the skin |