"-x" meaning in French

{
  "etymology_templates": [
    {
      "args": {
        "1": "fr",
        "2": "fro",
        "3": "voyeul",
        "4": "voyeus",
        "t": "vowel"
      },
      "expansion": "Old French voyeus (“vowel”)",
      "name": "inh"
    }
  ],
  "etymology_text": "From a medieval ligature for -us, which looked similar to the letter x and was ultimately treated as identical to it. Thus Old French voyeus (“vowel”) was also spelt voyex, for instance. Later on the u was reinserted before the -x and this latter thus became an alternative spelling of -s in said position.",
  "head_templates": [
    {
      "args": {
        "1": "fr",
        "2": "suffix",
        "3": "",
        "4": "",
        "5": "",
        "6": "",
        "g": "",
        "g2": "",
        "head": "",
        "sort": ""
      },
      "expansion": "-x",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "-x",
      "name": "fr-suffix"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "suffix",
  "related": [
    {
      "_dis1": "0 0",
      "word": "-s"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "_dis": "5 23 1 13 11 13 27 7",
          "kind": "other",
          "name": "Pages with 5 entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "english": "god → gods",
          "text": "dieu → dieux",
          "type": "example"
        },
        {
          "english": "core → cores",
          "text": "noyau → noyaux",
          "type": "example"
        },
        {
          "english": "Hebrew → Hebrews",
          "text": "hébreu → hébreux",
          "type": "example"
        }
      ],
      "glosses": [
        "Used to form the regular plurals of nouns and adjectives in -au and -eu."
      ],
      "id": "en--x-fr-suffix-liuz9AHn",
      "tags": [
        "morpheme"
      ]
    },
    {
      "categories": [
        {
          "_dis": "5 23 1 13 11 13 27 7",
          "kind": "other",
          "name": "Pages with 5 entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "40 60",
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "english": "louse → lice",
          "text": "pou → poux",
          "type": "example"
        }
      ],
      "glosses": [
        "Used to form the irregular plurals of a few nouns in -ou (which regularly add -s)."
      ],
      "id": "en--x-fr-suffix-GK-9afHy",
      "links": [
        [
          "-s",
          "-s#French"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "other": "/z‿/"
    }
  ],
  "word": "-x"
}

{
  "categories": [
    "French entries with incorrect language header",
    "French lemmas",
    "French suffixes",
    "French terms derived from Old French",
    "French terms inherited from Old French",
    "Pages with 5 entries"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "fr",
        "2": "fro",
        "3": "voyeul",
        "4": "voyeus",
        "t": "vowel"
      },
      "expansion": "Old French voyeus (“vowel”)",
      "name": "inh"
    }
  ],
  "etymology_text": "From a medieval ligature for -us, which looked similar to the letter x and was ultimately treated as identical to it. Thus Old French voyeus (“vowel”) was also spelt voyex, for instance. Later on the u was reinserted before the -x and this latter thus became an alternative spelling of -s in said position.",
  "head_templates": [
    {
      "args": {
        "1": "fr",
        "2": "suffix",
        "3": "",
        "4": "",
        "5": "",
        "6": "",
        "g": "",
        "g2": "",
        "head": "",
        "sort": ""
      },
      "expansion": "-x",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "-x",
      "name": "fr-suffix"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "suffix",
  "related": [
    {
      "word": "-s"
    }
  ],
  "senses": [
    {
      "categories": [
        "French terms with usage examples"
      ],
      "examples": [
        {
          "english": "god → gods",
          "text": "dieu → dieux",
          "type": "example"
        },
        {
          "english": "core → cores",
          "text": "noyau → noyaux",
          "type": "example"
        },
        {
          "english": "Hebrew → Hebrews",
          "text": "hébreu → hébreux",
          "type": "example"
        }
      ],
      "glosses": [
        "Used to form the regular plurals of nouns and adjectives in -au and -eu."
      ],
      "tags": [
        "morpheme"
      ]
    },
    {
      "categories": [
        "French terms with usage examples"
      ],
      "examples": [
        {
          "english": "louse → lice",
          "text": "pou → poux",
          "type": "example"
        }
      ],
      "glosses": [
        "Used to form the irregular plurals of a few nouns in -ou (which regularly add -s)."
      ],
      "links": [
        [
          "-s",
          "-s#French"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "other": "/z‿/"
    }
  ],
  "word": "-x"
}