"on first-name terms" meaning in English

{
  "forms": [
    {
      "form": "first-name terms",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prepositional phrase",
        "head": "first-name terms"
      },
      "expansion": "first-name terms",
      "name": "head"
    },
    {
      "args": {
        "head": "first-name terms"
      },
      "expansion": "first-name terms",
      "name": "en-PP"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prep_phrase",
  "senses": [
    {
      "categories": [
        {
          "_dis": "94 6",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "100 0",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "100 0",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "Familiar with someone, such that one can address them by their first name."
      ],
      "id": "en-on_first-name_terms-en-prep_phrase-T-fCROyi",
      "links": [
        [
          "Familiar",
          "familiar"
        ]
      ],
      "related": [
        {
          "_dis1": "100 0",
          "word": "on a first-name basis"
        }
      ]
    },
    {
      "categories": [],
      "examples": [
        {
          "text": "My accountant was so bad I am now on first-name terms with the tax department.",
          "type": "example"
        }
      ],
      "glosses": [
        "In regular contact with a person or organization."
      ],
      "id": "en-on_first-name_terms-en-prep_phrase-Tl~470uN",
      "links": [
        [
          "humorous",
          "humorous"
        ],
        [
          "contact",
          "contact"
        ],
        [
          "organization",
          "organization"
        ]
      ],
      "raw_glosses": [
        "(by extension, humorous) In regular contact with a person or organization."
      ],
      "tags": [
        "broadly",
        "humorous"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "LL-Q1860 (eng)-Flame, not lame-on first-name terms.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/3/3f/LL-Q1860_%28eng%29-Flame%2C_not_lame-on_first-name_terms.wav/LL-Q1860_%28eng%29-Flame%2C_not_lame-on_first-name_terms.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/3/3f/LL-Q1860_%28eng%29-Flame%2C_not_lame-on_first-name_terms.wav/LL-Q1860_%28eng%29-Flame%2C_not_lame-on_first-name_terms.wav.ogg"
    }
  ],
  "word": "on first-name terms"
}

{
  "categories": [
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English prepositional phrases",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "forms": [
    {
      "form": "first-name terms",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prepositional phrase",
        "head": "first-name terms"
      },
      "expansion": "first-name terms",
      "name": "head"
    },
    {
      "args": {
        "head": "first-name terms"
      },
      "expansion": "first-name terms",
      "name": "en-PP"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prep_phrase",
  "related": [
    {
      "word": "on a first-name basis"
    }
  ],
  "senses": [
    {
      "glosses": [
        "Familiar with someone, such that one can address them by their first name."
      ],
      "links": [
        [
          "Familiar",
          "familiar"
        ]
      ]
    },
    {
      "categories": [
        "English humorous terms",
        "English terms with usage examples"
      ],
      "examples": [
        {
          "text": "My accountant was so bad I am now on first-name terms with the tax department.",
          "type": "example"
        }
      ],
      "glosses": [
        "In regular contact with a person or organization."
      ],
      "links": [
        [
          "humorous",
          "humorous"
        ],
        [
          "contact",
          "contact"
        ],
        [
          "organization",
          "organization"
        ]
      ],
      "raw_glosses": [
        "(by extension, humorous) In regular contact with a person or organization."
      ],
      "tags": [
        "broadly",
        "humorous"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "LL-Q1860 (eng)-Flame, not lame-on first-name terms.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/3/3f/LL-Q1860_%28eng%29-Flame%2C_not_lame-on_first-name_terms.wav/LL-Q1860_%28eng%29-Flame%2C_not_lame-on_first-name_terms.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/3/3f/LL-Q1860_%28eng%29-Flame%2C_not_lame-on_first-name_terms.wav/LL-Q1860_%28eng%29-Flame%2C_not_lame-on_first-name_terms.wav.ogg"
    }
  ],
  "word": "on first-name terms"
}