"aller-retour" meaning in French

{
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "el",
            "2": "αλέ-ρετούρ",
            "bor": "1",
            "g": "n"
          },
          "expansion": "→ Greek: αλέ-ρετούρ n (alé-retoúr)",
          "name": "desc"
        }
      ],
      "text": "→ Greek: αλέ-ρετούρ n (alé-retoúr)"
    }
  ],
  "forms": [
    {
      "form": "aller-retour",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "allers-retours",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "aller-retours",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "aller-retour",
        "3": "allers-retours",
        "4": "aller-retours"
      },
      "expansion": "aller-retour m (plural aller-retour or allers-retours or aller-retours)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "97 3",
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "95 5",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "93 7",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "98 2",
          "kind": "topical",
          "langcode": "fr",
          "name": "Travel",
          "orig": "fr:Travel",
          "parents": [
            "Human activity",
            "Transport",
            "Human behaviour",
            "All topics",
            "Human",
            "Fundamental"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "round trip"
      ],
      "id": "en-aller-retour-fr-noun-3N0iImvJ",
      "links": [
        [
          "round trip",
          "round trip"
        ]
      ],
      "tags": [
        "masculine"
      ]
    },
    {
      "glosses": [
        "return ticket"
      ],
      "id": "en-aller-retour-fr-noun-h0NOJuhW",
      "links": [
        [
          "return ticket",
          "return ticket"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/a.le.ʁ(ə).tuʁ/"
    },
    {
      "audio": "Fr-Paris--aller-retour.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/9/9d/Fr-Paris--aller-retour.ogg/Fr-Paris--aller-retour.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/9/9d/Fr-Paris--aller-retour.ogg"
    },
    {
      "audio": "Fr-aller-retour.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/9/91/Fr-aller-retour.ogg/Fr-aller-retour.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/9/91/Fr-aller-retour.ogg"
    }
  ],
  "word": "aller-retour"
}

{
  "categories": [
    "French 4-syllable words",
    "French countable nouns",
    "French entries with incorrect language header",
    "French lemmas",
    "French masculine nouns",
    "French multiword terms",
    "French nouns",
    "French terms with IPA pronunciation",
    "Pages with 1 entry",
    "Pages with entries",
    "fr:Travel"
  ],
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "el",
            "2": "αλέ-ρετούρ",
            "bor": "1",
            "g": "n"
          },
          "expansion": "→ Greek: αλέ-ρετούρ n (alé-retoúr)",
          "name": "desc"
        }
      ],
      "text": "→ Greek: αλέ-ρετούρ n (alé-retoúr)"
    }
  ],
  "forms": [
    {
      "form": "aller-retour",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "allers-retours",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "aller-retours",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "aller-retour",
        "3": "allers-retours",
        "4": "aller-retours"
      },
      "expansion": "aller-retour m (plural aller-retour or allers-retours or aller-retours)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "round trip"
      ],
      "links": [
        [
          "round trip",
          "round trip"
        ]
      ],
      "tags": [
        "masculine"
      ]
    },
    {
      "glosses": [
        "return ticket"
      ],
      "links": [
        [
          "return ticket",
          "return ticket"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/a.le.ʁ(ə).tuʁ/"
    },
    {
      "audio": "Fr-Paris--aller-retour.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/9/9d/Fr-Paris--aller-retour.ogg/Fr-Paris--aller-retour.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/9/9d/Fr-Paris--aller-retour.ogg"
    },
    {
      "audio": "Fr-aller-retour.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/9/91/Fr-aller-retour.ogg/Fr-aller-retour.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/9/91/Fr-aller-retour.ogg"
    }
  ],
  "word": "aller-retour"
}