Surdinela (f)
(with) definite article: laoriginal: сурдинела
Alternative [erroneous?] Bulgarian spelling in Todorov; NB: ➺ homonyms & similar terms, Sardellina & Sardëllina, Serdellina, Sordelina &c., and Sourdeline and related terms.
Тодоров, Манол [Todorov, Manol]: Български народни музикални инструменти: органография (Bulgarian folk instruments [organography]). София [Sofija], 1973, p.74.