"rzęsiak" meaning in Polish

{
  "head_templates": [
    {
      "args": {
        "1": "m-in"
      },
      "expansion": "rzęsiak m inan",
      "name": "pl-noun"
    }
  ],
  "hyphenation": [
    "rzę‧siak"
  ],
  "lang": "Polish",
  "lang_code": "pl",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Polish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "lifeform",
          "langcode": "pl",
          "name": "Spore plants",
          "orig": "pl:Spore plants",
          "parents": [
            "Plants",
            "Lifeforms",
            "All topics",
            "Life",
            "Fundamental",
            "Nature"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "a liverwort belonging to the genus Ptilidium"
      ],
      "id": "en-rzęsiak-pl-noun-1U1De13C",
      "links": [
        [
          "liverwort",
          "liverwort"
        ],
        [
          "Ptilidium",
          "Ptilidium#Translingual"
        ]
      ],
      "tags": [
        "inanimate",
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈʐɛɲ.ɕak/"
    },
    {
      "rhymes": "-ɛɲɕak"
    }
  ],
  "word": "rzęsiak"
}

{
  "head_templates": [
    {
      "args": {
        "1": "m-in"
      },
      "expansion": "rzęsiak m inan",
      "name": "pl-noun"
    }
  ],
  "hyphenation": [
    "rzę‧siak"
  ],
  "lang": "Polish",
  "lang_code": "pl",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Polish 2-syllable words",
        "Polish entries with incorrect language header",
        "Polish inanimate nouns",
        "Polish lemmas",
        "Polish masculine nouns",
        "Polish nouns",
        "Polish terms with IPA pronunciation",
        "Rhymes:Polish/ɛɲɕak",
        "Rhymes:Polish/ɛɲɕak/2 syllables",
        "pl:Spore plants"
      ],
      "glosses": [
        "a liverwort belonging to the genus Ptilidium"
      ],
      "links": [
        [
          "liverwort",
          "liverwort"
        ],
        [
          "Ptilidium",
          "Ptilidium#Translingual"
        ]
      ],
      "tags": [
        "inanimate",
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈʐɛɲ.ɕak/"
    },
    {
      "rhymes": "-ɛɲɕak"
    }
  ],
  "word": "rzęsiak"
}