"trémula" meaning in Portuguese

{
  "head_templates": [
    {
      "args": {
        "1": "pt",
        "2": "adjective form"
      },
      "expansion": "trémula",
      "name": "head"
    }
  ],
  "hyphenation": [
    "tré‧mu‧la"
  ],
  "lang": "Portuguese",
  "lang_code": "pt",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 4 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Portuguese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "trémulo"
        }
      ],
      "glosses": [
        "feminine singular of trémulo"
      ],
      "id": "en-trémula-pt-adj-xJr-29wp",
      "links": [
        [
          "trémulo",
          "trémulo#Portuguese"
        ]
      ],
      "tags": [
        "feminine",
        "form-of",
        "singular"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈtɾɛ.mu.lɐ/",
      "tags": [
        "Portugal"
      ]
    },
    {
      "rhymes": "(Portugal) -ɛmulɐ"
    }
  ],
  "word": "trémula"
}

{
  "head_templates": [
    {
      "args": {
        "1": "pt",
        "2": "adjective form"
      },
      "expansion": "trémula",
      "name": "head"
    }
  ],
  "hyphenation": [
    "tré‧mu‧la"
  ],
  "lang": "Portuguese",
  "lang_code": "pt",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "Pages with 4 entries",
        "Pages with entries",
        "Portuguese 3-syllable words",
        "Portuguese adjective forms",
        "Portuguese entries with incorrect language header",
        "Portuguese non-lemma forms",
        "Portuguese terms with IPA pronunciation",
        "Rhymes:Portuguese/ɛmulɐ",
        "Rhymes:Portuguese/ɛmulɐ/3 syllables"
      ],
      "form_of": [
        {
          "word": "trémulo"
        }
      ],
      "glosses": [
        "feminine singular of trémulo"
      ],
      "links": [
        [
          "trémulo",
          "trémulo#Portuguese"
        ]
      ],
      "tags": [
        "feminine",
        "form-of",
        "singular"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈtɾɛ.mu.lɐ/",
      "tags": [
        "Portugal"
      ]
    },
    {
      "rhymes": "(Portugal) -ɛmulɐ"
    }
  ],
  "word": "trémula"
}