From Wiktionary, the free dictionary
From кни́га (kníga) + -ле (-le).
книжле́ • (knižlé) n
- diminutive of кни́га (kníga): small book, light reading
- Synonym: кни́жка (knížka)
- “книжле”, in Речник на българския език [Dictionary of the Bulgarian Language] (in Bulgarian), Sofia: Bulgarian Academy of Sciences, 2014
- “книжле”, in Речник на българския език [Dictionary of the Bulgarian Language] (in Bulgarian), Chitanka, 2010