"a.b." meaning in All languages combined

{
  "etymology_number": 1,
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "able-bodied seaman"
      },
      "expansion": "Abbreviation of able-bodied seaman",
      "name": "abbrev"
    }
  ],
  "etymology_text": "Abbreviation of able-bodied seaman.",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "noun"
      },
      "expansion": "a.b.",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Nautical",
          "orig": "en:Nautical",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "_dis": "99 1",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "99 1",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "99 1",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "Able-bodied seaman."
      ],
      "id": "en-a.b.-en-noun-VaZJKBUs",
      "links": [
        [
          "nautical",
          "nautical"
        ],
        [
          "Able-bodied seaman",
          "able-bodied seaman#English"
        ]
      ],
      "raw_glosses": [
        "(nautical) Able-bodied seaman."
      ],
      "topics": [
        "nautical",
        "transport"
      ]
    }
  ],
  "word": "a.b."
}

{
  "etymology_number": 2,
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "phrase"
      },
      "expansion": "a.b.",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
  "senses": [
    {
      "alt_of": [
        {
          "word": "as before"
        }
      ],
      "categories": [],
      "glosses": [
        "Initialism of as before."
      ],
      "id": "en-a.b.-en-phrase-RYVZ57Pn",
      "links": [
        [
          "as",
          "as#English"
        ],
        [
          "before",
          "before#English"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "initialism"
      ]
    }
  ],
  "word": "a.b."
}

{
  "categories": [
    "English abbreviations",
    "English entries with incorrect language header",
    "English lemmas",
    "English nouns",
    "English phrases",
    "English terms spelled with .",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "etymology_number": 1,
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "able-bodied seaman"
      },
      "expansion": "Abbreviation of able-bodied seaman",
      "name": "abbrev"
    }
  ],
  "etymology_text": "Abbreviation of able-bodied seaman.",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "noun"
      },
      "expansion": "a.b.",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "en:Nautical"
      ],
      "glosses": [
        "Able-bodied seaman."
      ],
      "links": [
        [
          "nautical",
          "nautical"
        ],
        [
          "Able-bodied seaman",
          "able-bodied seaman#English"
        ]
      ],
      "raw_glosses": [
        "(nautical) Able-bodied seaman."
      ],
      "topics": [
        "nautical",
        "transport"
      ]
    }
  ],
  "word": "a.b."
}

{
  "categories": [
    "English entries with incorrect language header",
    "English lemmas",
    "English phrases",
    "English terms spelled with .",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "etymology_number": 2,
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "phrase"
      },
      "expansion": "a.b.",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
  "senses": [
    {
      "alt_of": [
        {
          "word": "as before"
        }
      ],
      "categories": [
        "English initialisms"
      ],
      "glosses": [
        "Initialism of as before."
      ],
      "links": [
        [
          "as",
          "as#English"
        ],
        [
          "before",
          "before#English"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "initialism"
      ]
    }
  ],
  "word": "a.b."
}