"unilateral contract" meaning in English

{
  "forms": [
    {
      "form": "unilateral contracts",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "unilateral contract (plural unilateral contracts)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
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          "source": "w"
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          "kind": "topical",
          "langcode": "en",
          "name": "Law",
          "orig": "en:Law",
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            "Society",
            "All topics",
            "Fundamental"
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        }
      ],
      "glosses": [
        "An agreement in which an offeror's offer can be accepted only by the performance of an act by the offeree; a \"promise for a performance\"."
      ],
      "id": "en-unilateral_contract-en-noun-DXO4ZxsS",
      "links": [
        [
          "law",
          "law#English"
        ],
        [
          "offeror",
          "offeror"
        ],
        [
          "performance",
          "performance"
        ],
        [
          "offeree",
          "offeree"
        ]
      ],
      "raw_glosses": [
        "(law) An agreement in which an offeror's offer can be accepted only by the performance of an act by the offeree; a \"promise for a performance\"."
      ],
      "topics": [
        "law"
      ]
    }
  ],
  "word": "unilateral contract"
}

{
  "forms": [
    {
      "form": "unilateral contracts",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "unilateral contract (plural unilateral contracts)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        "English countable nouns",
        "English entries with incorrect language header",
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        "English multiword terms",
        "English nouns",
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        "en:Law"
      ],
      "glosses": [
        "An agreement in which an offeror's offer can be accepted only by the performance of an act by the offeree; a \"promise for a performance\"."
      ],
      "links": [
        [
          "law",
          "law#English"
        ],
        [
          "offeror",
          "offeror"
        ],
        [
          "performance",
          "performance"
        ],
        [
          "offeree",
          "offeree"
        ]
      ],
      "raw_glosses": [
        "(law) An agreement in which an offeror's offer can be accepted only by the performance of an act by the offeree; a \"promise for a performance\"."
      ],
      "topics": [
        "law"
      ]
    }
  ],
  "word": "unilateral contract"
}