"acha" meaning in Welsh

{
  "etymology_templates": [
    {
      "args": {
        "1": "cy",
        "2": "ar",
        "3": "uchaf",
        "gloss1": "on",
        "gloss2": "highest, top"
      },
      "expansion": "ar (“on”) + uchaf (“highest, top”)",
      "name": "compound"
    }
  ],
  "etymology_text": "From ar (“on”) + uchaf (“highest, top”).",
  "head_templates": [
    {
      "args": {
        "1": "cy",
        "2": "preposition"
      },
      "expansion": "acha",
      "name": "head"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "prep",
  "senses": [
    {
      "categories": [],
      "examples": [
        {
          "english": "He's gone on a bike",
          "ref": "2016, David Thorne, chapter 70, in Gafael mewn Gramadeg, Caerfyrddin: Y Coleg Cymraeg Cenedlaethol, page 197:",
          "text": "Mae e wedi mynd acha beic",
          "type": "quote"
        }
      ],
      "glosses": [
        "on"
      ],
      "id": "en-acha-cy-prep-uNMehScl",
      "links": [
        [
          "on",
          "on#English"
        ]
      ],
      "raw_glosses": [
        "(South Wales, colloquial) on"
      ],
      "synonyms": [
        {
          "word": "ar"
        },
        {
          "word": "ar gefn"
        }
      ],
      "tags": [
        "South-Wales",
        "colloquial"
      ]
    },
    {
      "categories": [
        {
          "_dis": "0 100",
          "kind": "other",
          "name": "Welsh entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "39 61",
          "kind": "other",
          "name": "Welsh prepositions",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "english": "He'll split the wood with an axe",
          "ref": "2016, David Thorne, chapter 70, in Gafael mewn Gramadeg, Caerfyrddin: Y Coleg Cymraeg Cenedlaethol, page 197:",
          "text": "Bydd e'n hollti'r coed acha bwyell",
          "type": "quote"
        }
      ],
      "glosses": [
        "with (denoting an instrument)"
      ],
      "id": "en-acha-cy-prep-YmfHxAMr",
      "links": [
        [
          "with",
          "with#English"
        ]
      ],
      "raw_glosses": [
        "(South Wales, colloquial) with (denoting an instrument)"
      ],
      "synonyms": [
        {
          "word": "â"
        },
        {
          "word": "efo"
        },
        {
          "word": "gyda"
        }
      ],
      "tags": [
        "South-Wales",
        "colloquial"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈaχa/",
      "tags": [
        "North-Wales"
      ]
    },
    {
      "ipa": "/ˈa(ː)χa/",
      "tags": [
        "South-Wales"
      ]
    }
  ],
  "word": "acha"
}

{
  "categories": [
    "Pages with 10 entries",
    "Pages with entries",
    "Welsh compound terms",
    "Welsh entries with incorrect language header",
    "Welsh lemmas",
    "Welsh prepositions"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "cy",
        "2": "ar",
        "3": "uchaf",
        "gloss1": "on",
        "gloss2": "highest, top"
      },
      "expansion": "ar (“on”) + uchaf (“highest, top”)",
      "name": "compound"
    }
  ],
  "etymology_text": "From ar (“on”) + uchaf (“highest, top”).",
  "head_templates": [
    {
      "args": {
        "1": "cy",
        "2": "preposition"
      },
      "expansion": "acha",
      "name": "head"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "prep",
  "senses": [
    {
      "categories": [
        "Welsh terms with quotations"
      ],
      "examples": [
        {
          "english": "He's gone on a bike",
          "ref": "2016, David Thorne, chapter 70, in Gafael mewn Gramadeg, Caerfyrddin: Y Coleg Cymraeg Cenedlaethol, page 197:",
          "text": "Mae e wedi mynd acha beic",
          "type": "quote"
        }
      ],
      "glosses": [
        "on"
      ],
      "links": [
        [
          "on",
          "on#English"
        ]
      ],
      "raw_glosses": [
        "(South Wales, colloquial) on"
      ],
      "synonyms": [
        {
          "word": "ar"
        },
        {
          "word": "ar gefn"
        }
      ],
      "tags": [
        "South-Wales",
        "colloquial"
      ]
    },
    {
      "categories": [
        "Welsh terms with quotations"
      ],
      "examples": [
        {
          "english": "He'll split the wood with an axe",
          "ref": "2016, David Thorne, chapter 70, in Gafael mewn Gramadeg, Caerfyrddin: Y Coleg Cymraeg Cenedlaethol, page 197:",
          "text": "Bydd e'n hollti'r coed acha bwyell",
          "type": "quote"
        }
      ],
      "glosses": [
        "with (denoting an instrument)"
      ],
      "links": [
        [
          "with",
          "with#English"
        ]
      ],
      "raw_glosses": [
        "(South Wales, colloquial) with (denoting an instrument)"
      ],
      "synonyms": [
        {
          "word": "â"
        },
        {
          "word": "efo"
        },
        {
          "word": "gyda"
        }
      ],
      "tags": [
        "South-Wales",
        "colloquial"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈaχa/",
      "tags": [
        "North-Wales"
      ]
    },
    {
      "ipa": "/ˈa(ː)χa/",
      "tags": [
        "South-Wales"
      ]
    }
  ],
  "word": "acha"
}