"on serve" meaning in All languages combined

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prepositional phrase",
        "head": ""
      },
      "expansion": "on serve",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "on serve",
      "name": "en-PP"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prep_phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Tennis",
          "orig": "en:Tennis",
          "parents": [
            "Ball games",
            "Racquet sports",
            "Sports",
            "Human activity",
            "Human behaviour",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2010, Caroline Cheese, BBC website",
          "text": "The fourth set between Gabashvili and Melzer is still on serve, the Russian leading 4-3, but the Austrian holding a two sets to one lead.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "With each player or pairing having won the same number of games as they have served."
      ],
      "id": "en-on_serve-en-prep_phrase-tht8TZLW",
      "links": [
        [
          "tennis",
          "tennis"
        ]
      ],
      "raw_glosses": [
        "(tennis) With each player or pairing having won the same number of games as they have served."
      ],
      "topics": [
        "hobbies",
        "lifestyle",
        "sports",
        "tennis"
      ]
    }
  ],
  "word": "on serve"
}

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prepositional phrase",
        "head": ""
      },
      "expansion": "on serve",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "on serve",
      "name": "en-PP"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prep_phrase",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English prepositional phrases",
        "English terms with quotations",
        "en:Tennis"
      ],
      "examples": [
        {
          "ref": "2010, Caroline Cheese, BBC website",
          "text": "The fourth set between Gabashvili and Melzer is still on serve, the Russian leading 4-3, but the Austrian holding a two sets to one lead.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "With each player or pairing having won the same number of games as they have served."
      ],
      "links": [
        [
          "tennis",
          "tennis"
        ]
      ],
      "raw_glosses": [
        "(tennis) With each player or pairing having won the same number of games as they have served."
      ],
      "topics": [
        "hobbies",
        "lifestyle",
        "sports",
        "tennis"
      ]
    }
  ],
  "word": "on serve"
}