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Etymology
Per Bulgarian Etymological Dictionary (it splits the term into two separate lemmas), perhaps:
 * From, equivalent to ;
 * From, equivalent to (cf. dial. 🇨🇬).

Noun

 * 1) boundary between slots of land (usually in the form of an embankment or a hedge)
 * 2)  edge, brink

Etymology 1
From. Vasmer suggests derivation from ; compare.

Noun

 * 1) kidney

Etymology 2
, from. Compare 🇨🇬, 🇨🇬, 🇨🇬, 🇨🇬.

Noun

 * 1) bud