"streakline" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "streak",
        "3": "line"
      },
      "expansion": "streak + line",
      "name": "compound"
    }
  ],
  "etymology_text": "From streak + line.",
  "forms": [
    {
      "form": "streaklines",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "streakline (plural streaklines)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "Dye steadily injected into the fluid at a fixed point extends along a streakline.",
          "type": "example"
        }
      ],
      "glosses": [
        "A locus of points of all the fluid particles that have passed continuously through a particular spatial point in the past."
      ],
      "id": "en-streakline-en-noun-Frk-fpB6",
      "links": [
        [
          "locus",
          "locus"
        ],
        [
          "point",
          "point"
        ],
        [
          "fluid",
          "fluid"
        ],
        [
          "particle",
          "particle"
        ],
        [
          "spatial",
          "spatial"
        ]
      ]
    }
  ],
  "word": "streakline"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "streak",
        "3": "line"
      },
      "expansion": "streak + line",
      "name": "compound"
    }
  ],
  "etymology_text": "From streak + line.",
  "forms": [
    {
      "form": "streaklines",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "streakline (plural streaklines)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English compound terms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms with usage examples",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "text": "Dye steadily injected into the fluid at a fixed point extends along a streakline.",
          "type": "example"
        }
      ],
      "glosses": [
        "A locus of points of all the fluid particles that have passed continuously through a particular spatial point in the past."
      ],
      "links": [
        [
          "locus",
          "locus"
        ],
        [
          "point",
          "point"
        ],
        [
          "fluid",
          "fluid"
        ],
        [
          "particle",
          "particle"
        ],
        [
          "spatial",
          "spatial"
        ]
      ]
    }
  ],
  "word": "streakline"
}