sernik

From dialectal Russian се́рник (sérnik). Compare Ukrainian сірни́к (sirnýk). (Can this⁽⁺⁾ etymology be sourced?)

sernik

1. match

Polish Wikipedia has an article on:

sernik

Wikipedia ^pl

From ser +‎ -nik.

• IPA^(key): /ˈsɛr.ɲik/

• Audio:

  (file)

• Rhymes: -ɛrɲik
• Syllabification: ser‧nik
• Homophone: Sernik

sernik m animal or m inan (diminutive serniczek, related adjective sernikowy)

1. (countable) cheesecake (pie made of sweetened and flavored cottage cheese or cream cheese, eggs, and milk on a crunchy base)

   Synonyms: serowiec, serownik

   Hypernym: ciasto

sernik m inan

1. (uncountable) cheese room (room designed to dry cheese in the process of its traditional production)

   Hypernym: pomieszczenie

2. (uncountable) casein (protein present in both milk and in the seeds of leguminous plants)

   Synonym: kazeina

   Hypernym: białko

• sernik in Wielki słownik języka polskiego, Instytut Języka Polskiego PAN
• sernik in Polish dictionaries at PWN
• sernik in PWN's encyclopedia