"en-" meaning in Tocharian B

{
  "derived": [
    {
      "_dis1": "0 0",
      "english": "instruction, teaching, doctrine",
      "word": "enäṣṣālñe"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "xto",
        "2": "en-"
      },
      "expansion": "Tocharian A en-",
      "name": "cog"
    },
    {
      "args": {
        "1": "txb",
        "nocap": "1"
      },
      "expansion": "uncertain",
      "name": "unc"
    },
    {
      "args": {
        "1": "txb",
        "2": "ine-pro",
        "3": "-"
      },
      "expansion": "Proto-Indo-European",
      "name": "der"
    },
    {
      "args": {
        "1": "grc",
        "2": "αἶνος",
        "3": "",
        "4": "story, tale"
      },
      "expansion": "Ancient Greek αἶνος (aînos, “story, tale”)",
      "name": "cog"
    }
  ],
  "etymology_text": "Related to Tocharian A en-, either borrowed into or from Tocharian B. Of uncertain origin, possibly ultimately from Proto-Indo-European, cognate with Ancient Greek αἶνος (aînos, “story, tale”).",
  "head_templates": [
    {
      "args": {
        "1": "txb",
        "2": "verb"
      },
      "expansion": "en-",
      "name": "head"
    }
  ],
  "lang": "Tocharian B",
  "lang_code": "txb",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "_dis": "58 42",
          "kind": "other",
          "name": "Tocharian B entries with incorrect language header",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "100 0",
          "kind": "other",
          "langcode": "txb",
          "name": "Education",
          "orig": "txb:Education",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "to instruct, teach"
      ],
      "id": "en-en--txb-verb-bsQKHnH9",
      "links": [
        [
          "instruct",
          "instruct"
        ],
        [
          "teach",
          "teach"
        ]
      ]
    },
    {
      "glosses": [
        "to punish"
      ],
      "id": "en-en--txb-verb-G3PyFaL2",
      "links": [
        [
          "punish",
          "punish"
        ]
      ]
    }
  ],
  "word": "en-"
}

{
  "categories": [
    "Pages with 22 entries",
    "Pages with entries",
    "Tocharian B entries with incorrect language header",
    "Tocharian B lemmas",
    "Tocharian B terms derived from Proto-Indo-European",
    "Tocharian B terms with unknown etymologies",
    "Tocharian B verbs",
    "txb:Education"
  ],
  "derived": [
    {
      "english": "instruction, teaching, doctrine",
      "word": "enäṣṣālñe"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "xto",
        "2": "en-"
      },
      "expansion": "Tocharian A en-",
      "name": "cog"
    },
    {
      "args": {
        "1": "txb",
        "nocap": "1"
      },
      "expansion": "uncertain",
      "name": "unc"
    },
    {
      "args": {
        "1": "txb",
        "2": "ine-pro",
        "3": "-"
      },
      "expansion": "Proto-Indo-European",
      "name": "der"
    },
    {
      "args": {
        "1": "grc",
        "2": "αἶνος",
        "3": "",
        "4": "story, tale"
      },
      "expansion": "Ancient Greek αἶνος (aînos, “story, tale”)",
      "name": "cog"
    }
  ],
  "etymology_text": "Related to Tocharian A en-, either borrowed into or from Tocharian B. Of uncertain origin, possibly ultimately from Proto-Indo-European, cognate with Ancient Greek αἶνος (aînos, “story, tale”).",
  "head_templates": [
    {
      "args": {
        "1": "txb",
        "2": "verb"
      },
      "expansion": "en-",
      "name": "head"
    }
  ],
  "lang": "Tocharian B",
  "lang_code": "txb",
  "pos": "verb",
  "senses": [
    {
      "glosses": [
        "to instruct, teach"
      ],
      "links": [
        [
          "instruct",
          "instruct"
        ],
        [
          "teach",
          "teach"
        ]
      ]
    },
    {
      "glosses": [
        "to punish"
      ],
      "links": [
        [
          "punish",
          "punish"
        ]
      ]
    }
  ],
  "word": "en-"
}