From Wiktionary, the free dictionary
бо́ря се (bórja se, “to fight, to struggle”) + -як (-jak)
боря́к • (borják) m
- (obsolete) champion
- яйце-боряк (in Easter tradition) ― jajce-borjak ― winner egg
- “боряк”, in Речник на българския език [Dictionary of the Bulgarian Language] (in Bulgarian), Sofia: Bulgarian Academy of Sciences, 2014
- “боряк”, in Речник на българския език [Dictionary of the Bulgarian Language] (in Bulgarian), Chitanka, 2010