From Wiktionary, the free dictionary
зъб (zǎb, “tooth”) + -ер (-er).
зъ́бер • (zǎ́ber) m
- (literary) wedge, spike
- (by extension) cusp, crenel
- Synonym: канара́ (kanará)
- “зъбер”, in Речник на българския език [Dictionary of the Bulgarian Language] (in Bulgarian), Sofia: Bulgarian Academy of Sciences, 2014
- “зъбер”, in Речник на българския език [Dictionary of the Bulgarian Language] (in Bulgarian), Chitanka, 2010