"muzzle velocity" meaning in English

{
  "forms": [
    {
      "form": "muzzle velocities",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "muzzle velocity (plural muzzle velocities)",
      "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"
        },
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          "name": "Terms with Finnish translations",
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          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Swedish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Firearms",
          "orig": "en:Firearms",
          "parents": [
            "Weapons",
            "Hunting",
            "Military",
            "Tools",
            "Human activity",
            "Society",
            "Technology",
            "Human behaviour",
            "All topics",
            "Human",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The velocity of a discharged projectile at the muzzle of a firearm."
      ],
      "id": "en-muzzle_velocity-en-noun-QqzZsaWo",
      "links": [
        [
          "firearm",
          "firearm"
        ],
        [
          "velocity",
          "velocity"
        ],
        [
          "projectile",
          "projectile"
        ],
        [
          "muzzle",
          "muzzle"
        ]
      ],
      "raw_glosses": [
        "(firearms) The velocity of a discharged projectile at the muzzle of a firearm."
      ],
      "topics": [
        "engineering",
        "firearms",
        "government",
        "military",
        "natural-sciences",
        "physical-sciences",
        "politics",
        "tools",
        "war",
        "weaponry"
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "velocity of projectile",
          "word": "lähtönopeus"
        },
        {
          "code": "sv",
          "lang": "Swedish",
          "sense": "velocity of projectile",
          "tags": [
            "common-gender"
          ],
          "word": "utgångshastighet"
        }
      ]
    }
  ],
  "word": "muzzle velocity"
}

{
  "forms": [
    {
      "form": "muzzle velocities",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "muzzle velocity (plural muzzle velocities)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Entries with translation boxes",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with Finnish translations",
        "Terms with Swedish translations",
        "en:Firearms"
      ],
      "glosses": [
        "The velocity of a discharged projectile at the muzzle of a firearm."
      ],
      "links": [
        [
          "firearm",
          "firearm"
        ],
        [
          "velocity",
          "velocity"
        ],
        [
          "projectile",
          "projectile"
        ],
        [
          "muzzle",
          "muzzle"
        ]
      ],
      "raw_glosses": [
        "(firearms) The velocity of a discharged projectile at the muzzle of a firearm."
      ],
      "topics": [
        "engineering",
        "firearms",
        "government",
        "military",
        "natural-sciences",
        "physical-sciences",
        "politics",
        "tools",
        "war",
        "weaponry"
      ]
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "velocity of projectile",
      "word": "lähtönopeus"
    },
    {
      "code": "sv",
      "lang": "Swedish",
      "sense": "velocity of projectile",
      "tags": [
        "common-gender"
      ],
      "word": "utgångshastighet"
    }
  ],
  "word": "muzzle velocity"
}