"pro" meaning in Old Spanish

{
  "etymology_templates": [
    {
      "args": {
        "1": "osp",
        "2": "LL.",
        "3": "prōde",
        "4": "",
        "5": "useful"
      },
      "expansion": "Late Latin prōde (“useful”)",
      "name": "inh"
    },
    {
      "args": {
        "1": "pro",
        "2": "pro"
      },
      "expansion": "pro",
      "name": "m"
    }
  ],
  "etymology_text": "From Late Latin prōde (“useful”), perhaps via Old Occitan pro.",
  "head_templates": [
    {
      "args": {
        "1": "osp",
        "2": "noun",
        "g": "f",
        "g2": "",
        "head": "",
        "sort": ""
      },
      "expansion": "pro f",
      "name": "head"
    },
    {
      "args": {
        "1": "f",
        "2": "-"
      },
      "expansion": "pro f (usually uncountable)",
      "name": "osp-noun"
    }
  ],
  "lang": "Old Spanish",
  "lang_code": "osp",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Old Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "“Go and let us kill him. Let us throw him into that pit, and we shall see of what use his dream is to him! […] ”",
          "ref": "c. 1200, Almerich, Fazienda de Ultramar, f. 5v",
          "text": "Andat ⁊ matemoſle. Echemoſle en aq̃l pozo. E ueremos que prol aura so suenno. […]",
          "type": "quotation"
        },
        {
          "english": "We would do well marrying his daughters, out of need for [our own] benefit.",
          "ref": "1140 – 1207, Anonymous, Cantar de mio Cid 1374",
          "text": "Bien casariemos con sus fijas pora huebos de pro"
        },
        {
          "english": "I want to always support the Cid.\n(literally, “I want to walk for my Cid in every advantage.”)",
          "ref": "1140 – 1207, Anonymous, Cantar de mío Cid 1913",
          "text": "Andar le qⁱero amyo çid en toda pro"
        }
      ],
      "glosses": [
        "usefulness, advantage, benefit"
      ],
      "id": "en-pro-osp-noun-ux4GFLi9",
      "links": [
        [
          "usefulness",
          "usefulness"
        ],
        [
          "advantage",
          "advantage"
        ],
        [
          "benefit",
          "benefit"
        ]
      ],
      "related": [
        {
          "word": "por"
        }
      ],
      "tags": [
        "feminine",
        "uncountable",
        "usually"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈpɾo/"
    }
  ],
  "word": "pro"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "osp",
        "2": "LL.",
        "3": "prōde",
        "4": "",
        "5": "useful"
      },
      "expansion": "Late Latin prōde (“useful”)",
      "name": "inh"
    },
    {
      "args": {
        "1": "pro",
        "2": "pro"
      },
      "expansion": "pro",
      "name": "m"
    }
  ],
  "etymology_text": "From Late Latin prōde (“useful”), perhaps via Old Occitan pro.",
  "head_templates": [
    {
      "args": {
        "1": "osp",
        "2": "noun",
        "g": "f",
        "g2": "",
        "head": "",
        "sort": ""
      },
      "expansion": "pro f",
      "name": "head"
    },
    {
      "args": {
        "1": "f",
        "2": "-"
      },
      "expansion": "pro f (usually uncountable)",
      "name": "osp-noun"
    }
  ],
  "lang": "Old Spanish",
  "lang_code": "osp",
  "pos": "noun",
  "related": [
    {
      "word": "por"
    }
  ],
  "senses": [
    {
      "categories": [
        "Old Spanish entries with incorrect language header",
        "Old Spanish feminine nouns",
        "Old Spanish lemmas",
        "Old Spanish nouns",
        "Old Spanish terms derived from Late Latin",
        "Old Spanish terms inherited from Late Latin",
        "Old Spanish terms with IPA pronunciation",
        "Old Spanish terms with quotations",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "english": "“Go and let us kill him. Let us throw him into that pit, and we shall see of what use his dream is to him! […] ”",
          "ref": "c. 1200, Almerich, Fazienda de Ultramar, f. 5v",
          "text": "Andat ⁊ matemoſle. Echemoſle en aq̃l pozo. E ueremos que prol aura so suenno. […]",
          "type": "quotation"
        },
        {
          "english": "We would do well marrying his daughters, out of need for [our own] benefit.",
          "ref": "1140 – 1207, Anonymous, Cantar de mio Cid 1374",
          "text": "Bien casariemos con sus fijas pora huebos de pro"
        },
        {
          "english": "I want to always support the Cid.\n(literally, “I want to walk for my Cid in every advantage.”)",
          "ref": "1140 – 1207, Anonymous, Cantar de mío Cid 1913",
          "text": "Andar le qⁱero amyo çid en toda pro"
        }
      ],
      "glosses": [
        "usefulness, advantage, benefit"
      ],
      "links": [
        [
          "usefulness",
          "usefulness"
        ],
        [
          "advantage",
          "advantage"
        ],
        [
          "benefit",
          "benefit"
        ]
      ],
      "tags": [
        "feminine",
        "uncountable",
        "usually"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈpɾo/"
    }
  ],
  "word": "pro"
}