"dawn upon" meaning in Anglais

{
  "categories": [
    {
      "kind": "other",
      "name": "Compositions en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Locutions verbales en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Anglais",
      "orig": "anglais",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Composé de dawn et de upon."
  ],
  "forms": [
    {
      "form": "to dawn upon",
      "tags": [
        "infinitive"
      ]
    },
    {
      "form": "dawns upon",
      "tags": [
        "present",
        "third-person",
        "singular"
      ]
    },
    {
      "form": "dawned upon",
      "tags": [
        "preterite"
      ]
    },
    {
      "form": "dawned upon",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "dawning upon",
      "tags": [
        "participle",
        "present"
      ]
    }
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "verb",
  "pos_title": "Locution verbale",
  "senses": [
    {
      "alt_of": [
        {
          "word": "down on"
        }
      ],
      "glosses": [
        "Variante de down on (venir à l’esprit)."
      ],
      "id": "fr-dawn_upon-en-verb-v~~FNg2L",
      "tags": [
        "alt-of"
      ]
    }
  ],
  "word": "dawn upon"
}

{
  "categories": [
    "Compositions en anglais",
    "Locutions verbales en anglais",
    "anglais"
  ],
  "etymology_texts": [
    "Composé de dawn et de upon."
  ],
  "forms": [
    {
      "form": "to dawn upon",
      "tags": [
        "infinitive"
      ]
    },
    {
      "form": "dawns upon",
      "tags": [
        "present",
        "third-person",
        "singular"
      ]
    },
    {
      "form": "dawned upon",
      "tags": [
        "preterite"
      ]
    },
    {
      "form": "dawned upon",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "dawning upon",
      "tags": [
        "participle",
        "present"
      ]
    }
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "verb",
  "pos_title": "Locution verbale",
  "senses": [
    {
      "alt_of": [
        {
          "word": "down on"
        }
      ],
      "glosses": [
        "Variante de down on (venir à l’esprit)."
      ],
      "tags": [
        "alt-of"
      ]
    }
  ],
  "word": "dawn upon"
}