старейшина

By surface analysis, старе́йш (staréjš, “senior”) +‎ -ина (-ina).

• IPA^(key): [stɐˈrɛjʃinɐ]

старе́йшина • (staréjšina) m

1. senior officer (military rank)
2. (obsolete) elder member of a community who executes certain ceremonial function

• старшина́ (staršiná)

• ста́рец (stárec), ста́рик (stárik, “old man”)
• старе́й (staréj, “elder, senior”)

• “старейшина”, in Речник на българския език [Dictionary of the Bulgarian Language] (in Bulgarian), Sofia: Bulgarian Academy of Sciences, 2014
• “старейшина”, in Речник на българския език [Dictionary of the Bulgarian Language] (in Bulgarian), Chitanka, 2010
• Nayden Gerov, Тодор Панчев (1904) “старѣ́йшина”, in Рѣчникъ на Блъгарскꙑй язꙑкъ. Съ тлъкувание рѣчи-тꙑ на Блъгарскꙑ и на Русскꙑ. [Dictionary of the Bulgarian language]‎^[1] (in Bulgarian), volume 5, Plovdiv: Дружествена печꙗтница "Съгласие.", page 455
• Todorov, T. A., Racheva, M., editors (2010), “старейшина”, in Български етимологичен речник [Bulgarian Etymological Dictionary] (in Bulgarian), volume 7 (слòво – теря̀свам), Sofia: Prof. Marin Drinov Pubg. House, →ISBN, page 433
• “старѣишина”, in Старобългарски речник [Old Bulgarian Dictionary] (in Bulgarian), https://histdict.uni-sofia.bg, 2011—2024

• IPA^(key): [stɐˈrʲejʂɨnə]

старе́йшина • (staréjšina) m anim (genitive старе́йшины, nominative plural старе́йшины, genitive plural старе́йшин)

1. older member of a community, community leader, elder

   Synonym: аксакал (aksakal)

2. (Mormonism) elder

• Сове́т Старейшин (Sovét Starejšin)