"-tu" meaning in Basque

{
  "etymology_templates": [
    {
      "args": {
        "1": "eu",
        "2": "la",
        "3": "-tus",
        "4": "-tum"
      },
      "expansion": "Latin -tum",
      "name": "bor"
    }
  ],
  "etymology_text": "From Latin -tum, a past participle forming suffix. Basque borrowed Latin verbs in their participle form (for example, aditu (“to hear”) from audītum, neuter perfect passive participle of audiō (“I hear”)), with the ending being reinterpreted as a new verb forming suffix.",
  "head_templates": [
    {
      "args": {
        "1": "eu",
        "2": "suffix"
      },
      "expansion": "-tu",
      "name": "head"
    }
  ],
  "lang": "Basque",
  "lang_code": "eu",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        {
          "_dis": "59 41",
          "kind": "other",
          "name": "Basque entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "54 46",
          "kind": "other",
          "name": "Pages with 10 entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "text": "euskara (“Basque”) + -tu → euskaratu (“to translate into Basque”)",
          "type": "example"
        },
        {
          "text": "ohera (“to, towards bed”) + -tu → oheratu (“to go to bed”)",
          "type": "example"
        },
        {
          "text": "gehi (“plus”) + -tu → gehitu (“to add”)",
          "type": "example"
        }
      ],
      "glosses": [
        "A verb-forming suffix."
      ],
      "id": "en--tu-eu-suffix-PGrDGJ~r",
      "tags": [
        "morpheme"
      ]
    },
    {
      "categories": [
        {
          "_dis": "54 46",
          "kind": "other",
          "name": "Pages with 10 entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "text": "gehi (“plus”) + -tu → gehitu (“augmented”)",
          "type": "example"
        }
      ],
      "glosses": [
        "Used to form adjectives, roughly corresponding to the English past participle forming suffix -ed."
      ],
      "id": "en--tu-eu-suffix-gUo1enou",
      "links": [
        [
          "adjective",
          "adjective#English"
        ],
        [
          "-ed",
          "-ed#English"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "synonyms": [
    {
      "_dis1": "0 0",
      "word": "-du"
    }
  ],
  "word": "-tu"
}

{
  "categories": [
    "Basque entries with incorrect language header",
    "Basque lemmas",
    "Basque suffixes",
    "Basque terms borrowed from Latin",
    "Basque terms derived from Latin",
    "Pages with 10 entries"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "eu",
        "2": "la",
        "3": "-tus",
        "4": "-tum"
      },
      "expansion": "Latin -tum",
      "name": "bor"
    }
  ],
  "etymology_text": "From Latin -tum, a past participle forming suffix. Basque borrowed Latin verbs in their participle form (for example, aditu (“to hear”) from audītum, neuter perfect passive participle of audiō (“I hear”)), with the ending being reinterpreted as a new verb forming suffix.",
  "head_templates": [
    {
      "args": {
        "1": "eu",
        "2": "suffix"
      },
      "expansion": "-tu",
      "name": "head"
    }
  ],
  "lang": "Basque",
  "lang_code": "eu",
  "pos": "suffix",
  "senses": [
    {
      "examples": [
        {
          "text": "euskara (“Basque”) + -tu → euskaratu (“to translate into Basque”)",
          "type": "example"
        },
        {
          "text": "ohera (“to, towards bed”) + -tu → oheratu (“to go to bed”)",
          "type": "example"
        },
        {
          "text": "gehi (“plus”) + -tu → gehitu (“to add”)",
          "type": "example"
        }
      ],
      "glosses": [
        "A verb-forming suffix."
      ],
      "tags": [
        "morpheme"
      ]
    },
    {
      "examples": [
        {
          "text": "gehi (“plus”) + -tu → gehitu (“augmented”)",
          "type": "example"
        }
      ],
      "glosses": [
        "Used to form adjectives, roughly corresponding to the English past participle forming suffix -ed."
      ],
      "links": [
        [
          "adjective",
          "adjective#English"
        ],
        [
          "-ed",
          "-ed#English"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "-du"
    }
  ],
  "word": "-tu"
}