"κατὰ ῥοῦν" meaning in Древнегреческий

{
  "antonyms": [
    {
      "sense_index": 1,
      "word": "πρὸς ῥόον"
    }
  ],
  "categories": [
    {
      "kind": "other",
      "name": "Древнегреческий язык",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Течение/grc",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Фразеологизмы/grc",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Древнегреческий",
  "lang_code": "grc",
  "pos": "phrase",
  "senses": [
    {
      "glosses": [
        "вниз по течению"
      ],
      "id": "ru-κατὰ_ῥοῦν-grc-phrase-nrOgI7sB"
    }
  ],
  "word": "κατὰ ῥοῦν"
}

{
  "antonyms": [
    {
      "sense_index": 1,
      "word": "πρὸς ῥόον"
    }
  ],
  "categories": [
    "Древнегреческий язык",
    "Течение/grc",
    "Фразеологизмы/grc"
  ],
  "lang": "Древнегреческий",
  "lang_code": "grc",
  "pos": "phrase",
  "senses": [
    {
      "glosses": [
        "вниз по течению"
      ]
    }
  ],
  "word": "κατὰ ῥοῦν"
}