"tau cross" meaning in English

{
  "forms": [
    {
      "form": "tau crosses",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "tau cross (plural tau crosses)",
      "name": "en-noun"
    }
  ],
  "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": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Crosses",
          "orig": "en:Crosses",
          "parents": [
            "Christianity",
            "Abrahamism",
            "Religion",
            "Culture",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A cross shaped like the Greek capital letter tau, sometimes with all three ends of the cross expanded."
      ],
      "id": "en-tau_cross-en-noun-oi9oejVK"
    }
  ],
  "word": "tau cross"
}

{
  "forms": [
    {
      "form": "tau crosses",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "tau cross (plural tau crosses)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms derived from the shape of letters",
        "English terms with non-redundant non-automated sortkeys",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Crosses"
      ],
      "glosses": [
        "A cross shaped like the Greek capital letter tau, sometimes with all three ends of the cross expanded."
      ]
    }
  ],
  "word": "tau cross"
}