chest, breast

• Russian
  грудьgrudʹ

  ɡrutʲinherited
• Ukrainian
  груди́hrudy

  ɦruˈdɪinherited

  Used in the plural.

• Polish
  pierś

  pjɛrɕdifferent word · Proto-Slavic *pьrsь 'breast'
• Czech
  hruď

  ɦrucinherited
• Bosnian-Croatian-Serbian
  grudiгруди

  ˈɡrudiinherited

  Standard-specific words: prsa (Croatian) — From *pьrsь, like Polish pierś; Croatian also uses grudi.

• English
  chest, breast

Sound laws at work

• g → h (spirantization)