"steady on" meaning in English

{
  "forms": [
    {
      "form": "steady on !",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "head": "steady on!"
      },
      "expansion": "steady on!",
      "name": "en-interj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        {
          "_dis": "93 7",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "89 11",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "91 9",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "text": "- I'm never going back to that restaurant!\n- Steady on! They only brought you the wrong drink.",
          "type": "example"
        }
      ],
      "glosses": [
        "Indicates a need not to exaggerate or be excessive"
      ],
      "id": "en-steady_on-en-intj-ECkf5nih"
    },
    {
      "glosses": [
        "A generic exclamation of surprise"
      ],
      "id": "en-steady_on-en-intj-xiqFfHXi"
    }
  ],
  "word": "steady on"
}

{
  "categories": [
    "English entries with incorrect language header",
    "English interjections",
    "English lemmas",
    "English multiword terms",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "forms": [
    {
      "form": "steady on !",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "head": "steady on!"
      },
      "expansion": "steady on!",
      "name": "en-interj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        "English terms with usage examples"
      ],
      "examples": [
        {
          "text": "- I'm never going back to that restaurant!\n- Steady on! They only brought you the wrong drink.",
          "type": "example"
        }
      ],
      "glosses": [
        "Indicates a need not to exaggerate or be excessive"
      ]
    },
    {
      "glosses": [
        "A generic exclamation of surprise"
      ]
    }
  ],
  "word": "steady on"
}