"sach" meaning in Welsh

{
  "etymology_templates": [
    {
      "args": {
        "1": "cy",
        "2": "wlm",
        "3": "sach"
      },
      "expansion": "Middle Welsh sach",
      "name": "inh"
    },
    {
      "args": {
        "1": "cy",
        "2": "cel-bry-pro",
        "3": "*sax"
      },
      "expansion": "Proto-Brythonic *sax",
      "name": "inh"
    },
    {
      "args": {
        "1": "cy",
        "2": "la",
        "3": "saccus"
      },
      "expansion": "Latin saccus",
      "name": "der"
    },
    {
      "args": {
        "1": "cy",
        "2": "grc",
        "3": "σάκκος",
        "4": "",
        "5": "bag of coarse cloth"
      },
      "expansion": "Ancient Greek σάκκος (sákkos, “bag of coarse cloth”)",
      "name": "der"
    },
    {
      "args": {
        "1": "cy",
        "2": "sem"
      },
      "expansion": "Semitic",
      "name": "der"
    }
  ],
  "etymology_text": "From Middle Welsh sach, from Proto-Brythonic *sax, from Latin saccus, from Ancient Greek σάκκος (sákkos, “bag of coarse cloth”), from Semitic.",
  "forms": [
    {
      "form": "sachau",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f",
        "2": "sachau"
      },
      "expansion": "sach f (plural sachau, not mutable)",
      "name": "cy-noun"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Welsh entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "cy",
          "name": "Bags",
          "orig": "cy:Bags",
          "parents": [
            "Containers",
            "Tools",
            "Technology",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "derived": [
        {
          "english": "gunnysack",
          "word": "sach fras"
        },
        {
          "english": "backpack",
          "word": "sach gefn"
        },
        {
          "english": "sleeping bag",
          "word": "sach gysgu"
        },
        {
          "word": "sachlïain"
        },
        {
          "word": "llieinsach"
        },
        {
          "english": "sackcloth",
          "word": "lliain sach"
        }
      ],
      "glosses": [
        "sack"
      ],
      "id": "en-sach-cy-noun-bsMnUi7o",
      "links": [
        [
          "sack",
          "sack"
        ]
      ],
      "related": [
        {
          "word": "sachell"
        }
      ],
      "tags": [
        "feminine",
        "not-mutable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/saːχ/"
    },
    {
      "rhymes": "-aːχ"
    }
  ],
  "word": "sach"
}

{
  "derived": [
    {
      "english": "gunnysack",
      "word": "sach fras"
    },
    {
      "english": "backpack",
      "word": "sach gefn"
    },
    {
      "english": "sleeping bag",
      "word": "sach gysgu"
    },
    {
      "word": "sachlïain"
    },
    {
      "word": "llieinsach"
    },
    {
      "english": "sackcloth",
      "word": "lliain sach"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "cy",
        "2": "wlm",
        "3": "sach"
      },
      "expansion": "Middle Welsh sach",
      "name": "inh"
    },
    {
      "args": {
        "1": "cy",
        "2": "cel-bry-pro",
        "3": "*sax"
      },
      "expansion": "Proto-Brythonic *sax",
      "name": "inh"
    },
    {
      "args": {
        "1": "cy",
        "2": "la",
        "3": "saccus"
      },
      "expansion": "Latin saccus",
      "name": "der"
    },
    {
      "args": {
        "1": "cy",
        "2": "grc",
        "3": "σάκκος",
        "4": "",
        "5": "bag of coarse cloth"
      },
      "expansion": "Ancient Greek σάκκος (sákkos, “bag of coarse cloth”)",
      "name": "der"
    },
    {
      "args": {
        "1": "cy",
        "2": "sem"
      },
      "expansion": "Semitic",
      "name": "der"
    }
  ],
  "etymology_text": "From Middle Welsh sach, from Proto-Brythonic *sax, from Latin saccus, from Ancient Greek σάκκος (sákkos, “bag of coarse cloth”), from Semitic.",
  "forms": [
    {
      "form": "sachau",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f",
        "2": "sachau"
      },
      "expansion": "sach f (plural sachau, not mutable)",
      "name": "cy-noun"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "noun",
  "related": [
    {
      "word": "sachell"
    }
  ],
  "senses": [
    {
      "categories": [
        "Rhymes:Welsh/aːχ",
        "Welsh countable nouns",
        "Welsh entries with incorrect language header",
        "Welsh feminine nouns",
        "Welsh lemmas",
        "Welsh non-mutable terms",
        "Welsh nouns",
        "Welsh nouns with red links in their headword lines",
        "Welsh terms derived from Ancient Greek",
        "Welsh terms derived from Latin",
        "Welsh terms derived from Middle Welsh",
        "Welsh terms derived from Proto-Brythonic",
        "Welsh terms derived from Semitic languages",
        "Welsh terms inherited from Middle Welsh",
        "Welsh terms inherited from Proto-Brythonic",
        "Welsh terms with IPA pronunciation",
        "cy:Bags"
      ],
      "glosses": [
        "sack"
      ],
      "links": [
        [
          "sack",
          "sack"
        ]
      ],
      "tags": [
        "feminine",
        "not-mutable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/saːχ/"
    },
    {
      "rhymes": "-aːχ"
    }
  ],
  "word": "sach"
}