"eine Schwalbe macht noch keinen Sommer" meaning in German

{
  "etymology_templates": [
    {
      "args": {
        "1": "one swallow still doesn't make a summer"
      },
      "expansion": "“one swallow still doesn't make a summer”",
      "name": "m-g"
    },
    {
      "args": {
        "1": "one swallow still doesn't make a summer"
      },
      "expansion": "Literally, “one swallow still doesn't make a summer”",
      "name": "lit"
    },
    {
      "args": {
        "1": "de",
        "2": "grc",
        "3": "μία χελιδὼν ἔαρ οὐ ποιεῖ",
        "nocap": "1",
        "t": "one swallow does not make a spring"
      },
      "expansion": "calque of Ancient Greek μία χελιδὼν ἔαρ οὐ ποιεῖ (mía khelidṑn éar ou poieî, “one swallow does not make a spring”)",
      "name": "cal"
    }
  ],
  "etymology_text": "Literally, “one swallow still doesn't make a summer”, a calque of Ancient Greek μία χελιδὼν ἔαρ οὐ ποιεῖ (mía khelidṑn éar ou poieî, “one swallow does not make a spring”); the reference to summer instead of spring is shared with various other European languages (see the descendants at the Greek entry).",
  "head_templates": [
    {
      "args": {
        "1": "de",
        "2": "proverb"
      },
      "expansion": "eine Schwalbe macht noch keinen Sommer",
      "name": "head"
    }
  ],
  "lang": "German",
  "lang_code": "de",
  "pos": "proverb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "German entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
        },
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          "kind": "other",
          "name": "German proverbs",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "one swallow does not a summer make"
      ],
      "id": "en-eine_Schwalbe_macht_noch_keinen_Sommer-de-proverb-P-5rXwRC",
      "links": [
        [
          "one swallow does not a summer make",
          "one swallow does not a summer make"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "audio": "De-eine Schwalbe macht noch keinen Sommer.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/f/fb/De-eine_Schwalbe_macht_noch_keinen_Sommer.ogg/De-eine_Schwalbe_macht_noch_keinen_Sommer.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/f/fb/De-eine_Schwalbe_macht_noch_keinen_Sommer.ogg",
      "text": "Audio"
    }
  ],
  "word": "eine Schwalbe macht noch keinen Sommer"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "one swallow still doesn't make a summer"
      },
      "expansion": "“one swallow still doesn't make a summer”",
      "name": "m-g"
    },
    {
      "args": {
        "1": "one swallow still doesn't make a summer"
      },
      "expansion": "Literally, “one swallow still doesn't make a summer”",
      "name": "lit"
    },
    {
      "args": {
        "1": "de",
        "2": "grc",
        "3": "μία χελιδὼν ἔαρ οὐ ποιεῖ",
        "nocap": "1",
        "t": "one swallow does not make a spring"
      },
      "expansion": "calque of Ancient Greek μία χελιδὼν ἔαρ οὐ ποιεῖ (mía khelidṑn éar ou poieî, “one swallow does not make a spring”)",
      "name": "cal"
    }
  ],
  "etymology_text": "Literally, “one swallow still doesn't make a summer”, a calque of Ancient Greek μία χελιδὼν ἔαρ οὐ ποιεῖ (mía khelidṑn éar ou poieî, “one swallow does not make a spring”); the reference to summer instead of spring is shared with various other European languages (see the descendants at the Greek entry).",
  "head_templates": [
    {
      "args": {
        "1": "de",
        "2": "proverb"
      },
      "expansion": "eine Schwalbe macht noch keinen Sommer",
      "name": "head"
    }
  ],
  "lang": "German",
  "lang_code": "de",
  "pos": "proverb",
  "senses": [
    {
      "categories": [
        "German entries with incorrect language header",
        "German lemmas",
        "German multiword terms",
        "German proverbs",
        "German terms calqued from Ancient Greek",
        "German terms derived from Ancient Greek",
        "German terms with audio links"
      ],
      "glosses": [
        "one swallow does not a summer make"
      ],
      "links": [
        [
          "one swallow does not a summer make",
          "one swallow does not a summer make"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "audio": "De-eine Schwalbe macht noch keinen Sommer.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/f/fb/De-eine_Schwalbe_macht_noch_keinen_Sommer.ogg/De-eine_Schwalbe_macht_noch_keinen_Sommer.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/f/fb/De-eine_Schwalbe_macht_noch_keinen_Sommer.ogg",
      "text": "Audio"
    }
  ],
  "word": "eine Schwalbe macht noch keinen Sommer"
}