down feather

• Мягкие, пушистые перья, находящиеся под более жёсткими внешними перьями птиц, обычно используемые для теплоизоляции в постельных принадлежностях, подушках и зимней одежде.

Soft, fluffy feathers found underneath the tougher exterior feathers of birds, typically used for insulation in bedding, pillows, and winter clothing.

1. Soft under-featherB1formal

   A soft, fluffy feather found under the tougher exterior feathers of birds, used for insulation and warmth.

   Пуховое перо

   • Down feathers are commonly used in high-quality pillows and comforters.
   • The jacket is filled with goose down feathers for extra warmth.
   • Birds use down feathers to regulate their body temperature.