{
    "term": "copper",
    "partOfSpeech": "noun",
    "ox5000": true,
    "cefr": "c1",
    "definitions": [
        {
            "senseNumber": 1,
            "definition": "a chemical element. Copper is a soft red-brown metal used for making electric wires, pipes and coins.",
            "cefr": "c1",
            "examples": [
                {
                    "text": "a copper mine"
                },
                {
                    "text": "copper pipes"
                },
                {
                    "text": "copper-coloured hair"
                },
                {
                    "text": "Her hair shone like burnished copper."
                },
                {
                    "text": "She works mainly in copper."
                },
                {
                    "text": "copper alloyed with arsenic"
                }
            ],
            "topics": ["Physics and chemistry"],
            "collocations": {
                "adjective": ["pure", "molten", "beaten"],
                "verb + copper": ["mine", "produce", "contain"],
                "copper + noun": ["mine", "miner", "mining"],
                "preposition": ["in copper"],
                "phrases": [
                    "an alloy of copper and something",
                    "an alloy of copper with something"
                ]
            }
        },
        {
            "senseNumber": 2,
            "definition": "brown coins that do not have much value",
            "labels": "(British English)",
            "examples": [
                {
                    "text": "I only paid a few coppers for it."
                }
            ]
        },
        {
            "senseNumber": 3,
            "definition": "a police officer",
            "labels": "(British English, informal)",
            "cefr": "c2",
            "examples": [
                {
                    "text": "Apparently, her dad's a copper."
                },
                {
                    "text": "There are a couple of coppers waiting outside."
                }
            ],
            "topics": ["Law and justice"]
        }
    ],
    "pronunciations": {
        "uk": [
            {
                "pronunciation": "/ˈkɒpə(r)/",
                "audio": "co/copper/copper__gb_1.mp3"
            }
        ],
        "us": [
            {
                "pronunciation": "/ˈkɑːpər/",
                "audio": "co/copper/copper__us_1.mp3"
            }
        ]
    },
    "wordOrigin": "senses 1 to 2 Old English copor, coper (related to Dutch koper and German Kupfer), based on late Latin cuprum, from Latin cyprium aes ‘Cyprus metal’ (so named because Cyprus was the chief source).sense 3 mid 19th cent.: from cop + -er."
}