"-wa" meaning in Swahili

{
  "etymology_templates": [
    {
      "args": {
        "1": "sw",
        "2": "bnt-pro",
        "3": "*-úa"
      },
      "expansion": "Proto-Bantu *-úa",
      "name": "inh"
    }
  ],
  "etymology_text": "From Proto-Bantu *-úa.",
  "head_templates": [
    {
      "args": {
        "1": "sw",
        "2": "suffix"
      },
      "expansion": "-wa",
      "name": "head"
    }
  ],
  "lang": "Swahili",
  "lang_code": "sw",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Swahili entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "Swahili passive verbs"
        }
      ],
      "examples": [
        {
          "text": "-tuma (“to send”) + -wa → -tumwa (“to be sent”)",
          "type": "example"
        },
        {
          "text": "-jaa (“to fill”) + -wa → -jawa (“to be filled”)",
          "type": "example"
        }
      ],
      "glosses": [
        "passive suffix"
      ],
      "id": "en--wa-sw-suffix-nMuhz-3F",
      "links": [
        [
          "passive suffix",
          "Appendix:Swahili verbal derivation#Passive"
        ]
      ],
      "synonyms": [
        {
          "word": "-iwa"
        },
        {
          "word": "-ewa"
        },
        {
          "word": "-liwa"
        },
        {
          "word": "-lewa"
        }
      ],
      "tags": [
        "morpheme",
        "passive",
        "suffix"
      ]
    }
  ],
  "word": "-wa"
}

{
  "derived": [
    {
      "word": "Swahili passive verbs"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "sw",
        "2": "bnt-pro",
        "3": "*-úa"
      },
      "expansion": "Proto-Bantu *-úa",
      "name": "inh"
    }
  ],
  "etymology_text": "From Proto-Bantu *-úa.",
  "head_templates": [
    {
      "args": {
        "1": "sw",
        "2": "suffix"
      },
      "expansion": "-wa",
      "name": "head"
    }
  ],
  "lang": "Swahili",
  "lang_code": "sw",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        "Swahili entries with incorrect language header",
        "Swahili lemmas",
        "Swahili suffixes",
        "Swahili terms derived from Proto-Bantu",
        "Swahili terms inherited from Proto-Bantu"
      ],
      "examples": [
        {
          "text": "-tuma (“to send”) + -wa → -tumwa (“to be sent”)",
          "type": "example"
        },
        {
          "text": "-jaa (“to fill”) + -wa → -jawa (“to be filled”)",
          "type": "example"
        }
      ],
      "glosses": [
        "passive suffix"
      ],
      "links": [
        [
          "passive suffix",
          "Appendix:Swahili verbal derivation#Passive"
        ]
      ],
      "tags": [
        "morpheme",
        "passive",
        "suffix"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "-iwa"
    },
    {
      "word": "-ewa"
    },
    {
      "word": "-liwa"
    },
    {
      "word": "-lewa"
    }
  ],
  "word": "-wa"
}