"tail recursive" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "tail recursive (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Programming",
          "orig": "en:Programming",
          "parents": [
            "Computing",
            "Software engineering",
            "Technology",
            "Computer science",
            "Engineering",
            "Software",
            "All topics",
            "Sciences",
            "Applied sciences",
            "Media",
            "Fundamental",
            "Communication"
          ],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "tail recursively"
        }
      ],
      "glosses": [
        "Employing tail recursion."
      ],
      "hypernyms": [
        {
          "word": "recursive"
        }
      ],
      "id": "en-tail_recursive-en-adj-9Hm3QehC",
      "links": [
        [
          "programming",
          "programming#Noun"
        ],
        [
          "tail recursion",
          "tail recursion"
        ]
      ],
      "raw_glosses": [
        "(programming) Employing tail recursion."
      ],
      "tags": [
        "not-comparable"
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "programming",
        "sciences"
      ]
    }
  ],
  "sounds": [
    {
      "rhymes": "-ɜː(ɹ)sɪv"
    }
  ],
  "word": "tail recursive"
}

{
  "derived": [
    {
      "word": "tail recursively"
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "tail recursive (not comparable)",
      "name": "en-adj"
    }
  ],
  "hypernyms": [
    {
      "word": "recursive"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English uncomparable adjectives",
        "Rhymes:English/ɜː(ɹ)sɪv",
        "en:Programming"
      ],
      "glosses": [
        "Employing tail recursion."
      ],
      "links": [
        [
          "programming",
          "programming#Noun"
        ],
        [
          "tail recursion",
          "tail recursion"
        ]
      ],
      "raw_glosses": [
        "(programming) Employing tail recursion."
      ],
      "tags": [
        "not-comparable"
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "programming",
        "sciences"
      ]
    }
  ],
  "sounds": [
    {
      "rhymes": "-ɜː(ɹ)sɪv"
    }
  ],
  "word": "tail recursive"
}