"A teamer" meaning in English

{
  "etymology_text": "From \"A team\" + \"-er\".",
  "forms": [
    {
      "form": "A teamers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "A teamer (plural A teamers)",
      "name": "en-noun"
    }
  ],
  "hyphenation": [
    "A‧team‧er"
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "coordinate_terms": [
        {
          "word": "B-Teamer"
        },
        {
          "word": "C-Teamer"
        }
      ],
      "derived": [
        {
          "word": "A-Team"
        }
      ],
      "glosses": [
        "A member of an A team; a member of the best or most effective team."
      ],
      "id": "en-A_teamer-en-noun-gbpTMT3V",
      "links": [
        [
          "A team",
          "A team"
        ]
      ],
      "raw_glosses": [
        "(informal) A member of an A team; a member of the best or most effective team."
      ],
      "related": [
        {
          "word": "A-Team"
        }
      ],
      "synonyms": [
        {
          "word": "First-stringer"
        }
      ],
      "tags": [
        "informal"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈeɪ ˌtiːmər/"
    },
    {
      "rhymes": "-iːmə"
    }
  ],
  "word": "A teamer"
}

{
  "coordinate_terms": [
    {
      "word": "B-Teamer"
    },
    {
      "word": "C-Teamer"
    }
  ],
  "derived": [
    {
      "word": "A-Team"
    }
  ],
  "etymology_text": "From \"A team\" + \"-er\".",
  "forms": [
    {
      "form": "A teamers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "A teamer (plural A teamers)",
      "name": "en-noun"
    }
  ],
  "hyphenation": [
    "A‧team‧er"
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "A-Team"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English informal terms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "Rhymes:English/iːmə"
      ],
      "glosses": [
        "A member of an A team; a member of the best or most effective team."
      ],
      "links": [
        [
          "A team",
          "A team"
        ]
      ],
      "raw_glosses": [
        "(informal) A member of an A team; a member of the best or most effective team."
      ],
      "tags": [
        "informal"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈeɪ ˌtiːmər/"
    },
    {
      "rhymes": "-iːmə"
    }
  ],
  "synonyms": [
    {
      "word": "First-stringer"
    }
  ],
  "word": "A teamer"
}