"trum" meaning in Proto-Brythonic

{
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "obt",
            "2": "trum"
          },
          "expansion": "Old Breton: trum",
          "name": "desc"
        }
      ],
      "text": "Old Breton: trum"
    },
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "cnx",
            "2": "trom"
          },
          "expansion": "Middle Cornish: trom",
          "name": "desc"
        }
      ],
      "text": "Middle Cornish: trom"
    },
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "owl",
            "2": "trum"
          },
          "expansion": "Old Welsh: trum",
          "name": "desc"
        }
      ],
      "text": "Old Welsh: trum"
    },
    {
      "depth": 2,
      "templates": [
        {
          "args": {
            "1": "wlm",
            "2": "trwm"
          },
          "expansion": "Middle Welsh: trwm",
          "name": "desc"
        }
      ],
      "text": "Middle Welsh: trwm"
    },
    {
      "depth": 3,
      "templates": [
        {
          "args": {
            "1": "cy",
            "2": "trwm"
          },
          "expansion": "Welsh: trwm",
          "name": "desc"
        }
      ],
      "text": "Welsh: trwm"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "cel-bry-pro",
        "2": "cel-pro",
        "3": "*trummos"
      },
      "expansion": "Proto-Celtic *trummos",
      "name": "inh"
    }
  ],
  "etymology_text": "From Proto-Celtic *trummos.",
  "forms": [
    {
      "form": "trom",
      "tags": [
        "feminine"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "cel-bry-pro",
        "2": "adjective",
        "3": "feminine",
        "4": "*trom",
        "5": "",
        "6": "*{{{f2}}}",
        "head": ""
      },
      "expansion": "*trum (feminine *trom)",
      "name": "head"
    }
  ],
  "lang": "Proto-Brythonic",
  "lang_code": "cel-bry-pro",
  "original_title": "Reconstruction:Proto-Brythonic/trum",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Proto-Brythonic entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "heavy"
      ],
      "id": "en-trum-cel-bry-pro-adj-ItWSXtZG",
      "links": [
        [
          "heavy",
          "heavy"
        ]
      ],
      "tags": [
        "reconstruction"
      ]
    }
  ],
  "word": "trum"
}

{
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "obt",
            "2": "trum"
          },
          "expansion": "Old Breton: trum",
          "name": "desc"
        }
      ],
      "text": "Old Breton: trum"
    },
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "cnx",
            "2": "trom"
          },
          "expansion": "Middle Cornish: trom",
          "name": "desc"
        }
      ],
      "text": "Middle Cornish: trom"
    },
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "owl",
            "2": "trum"
          },
          "expansion": "Old Welsh: trum",
          "name": "desc"
        }
      ],
      "text": "Old Welsh: trum"
    },
    {
      "depth": 2,
      "templates": [
        {
          "args": {
            "1": "wlm",
            "2": "trwm"
          },
          "expansion": "Middle Welsh: trwm",
          "name": "desc"
        }
      ],
      "text": "Middle Welsh: trwm"
    },
    {
      "depth": 3,
      "templates": [
        {
          "args": {
            "1": "cy",
            "2": "trwm"
          },
          "expansion": "Welsh: trwm",
          "name": "desc"
        }
      ],
      "text": "Welsh: trwm"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "cel-bry-pro",
        "2": "cel-pro",
        "3": "*trummos"
      },
      "expansion": "Proto-Celtic *trummos",
      "name": "inh"
    }
  ],
  "etymology_text": "From Proto-Celtic *trummos.",
  "forms": [
    {
      "form": "trom",
      "tags": [
        "feminine"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "cel-bry-pro",
        "2": "adjective",
        "3": "feminine",
        "4": "*trom",
        "5": "",
        "6": "*{{{f2}}}",
        "head": ""
      },
      "expansion": "*trum (feminine *trom)",
      "name": "head"
    }
  ],
  "lang": "Proto-Brythonic",
  "lang_code": "cel-bry-pro",
  "original_title": "Reconstruction:Proto-Brythonic/trum",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Proto-Brythonic adjectives",
        "Proto-Brythonic entries with incorrect language header",
        "Proto-Brythonic lemmas",
        "Proto-Brythonic terms derived from Proto-Celtic",
        "Proto-Brythonic terms inherited from Proto-Celtic"
      ],
      "glosses": [
        "heavy"
      ],
      "links": [
        [
          "heavy",
          "heavy"
        ]
      ],
      "tags": [
        "reconstruction"
      ]
    }
  ],
  "word": "trum"
}