down feather

• Plumes douces et duveteuses situées sous les plumes extérieures plus rigides des oiseaux, généralement utilisées pour l'isolation thermique dans la literie, les oreillers et les vêtements d'hiver.

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.

   duvet

   • 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.