плѣньникъ

плѣнъ (plěnŭ) +‎ -ьникъ (-ĭnikŭ)

плѣньникъ • (plěnĭnikŭ) m

1. hostage
2. captive, prisoner
   • Ретъко, editor (1025±50?), Codex Suprasliensis‎^[1] (in Old Church Slavonic), page (leaf) 230, line 25:

     и҅ сѣдꙙштии҅хъ вь҆ ть҆мѣ и҅ въ сѣни съмрьтьнѣ хоштетъ посѣтити · ибо плѣнника а҅дама и҅ плѣнꙿницѫ е҅угѫ · о҅тꙿ страстии раꙁдрѣшитъ · грꙙдетъ ꙗ҅ко б꙯ъ · и҅ сꙑнъ ѥ҅ю̑ ·

     And he wants to visit those sitting in darkness and the shadow of death, and indeed, to lose the captive Adam and the captive Eve from their suffering, he goes as (both) God and their son.

From плѣнъ (plěnŭ, “captivity”) +‎ -ьникъ (-ĭnikŭ). Akin to Old Church Slavonic плѣньникъ (plěnĭnikŭ).

• Hyphenation: плѣ‧нь‧ни‧къ

плѣньникъ (plěnĭnikŭ) m

1. captive, hostage, prisoner
   • 1076, Sviatoslav's izbornik‎^[2], page 4:

     и ꙗко же плѣньникомъ оумъ стоить оу родитель своихъ.

     i jako že plěnĭnikomŭ umŭ stoitĭ u roditelĭ svoixŭ.

     And just like to prisoners the thought is directed to their own parents.

• Old Ruthenian: плѣ́нникъ (plě́nnik)
  • Carpathian Rusyn: плї́нник (pljínnyk)
• Russian: пле́нник (plénnik)

• Sreznevsky, Izmail I. (1902) “плѣньникъ”, in Матеріалы для Словаря древне-русскаго языка по письменнымъ памятникамъ [Materials for the Dictionary of the Old East Slavic Language Based on Written Monuments]‎^[3] (in Russian), volume 2 (Л – П), Saint Petersburg: Department of Russian Language and Literature of the Imperial Academy of Sciences, column 977