1. the soft, fine underfeathers of a swan
2. a soft, thick cotton fabric with a fuzzy surface resembling swan’s down

Examples

• The pillow was stuffed with genuine swansdowns for ultimate softness.
• She collected the swansdowns that had fallen near the lake.
• The baby’s blanket was made from the finest swansdowns fabric.
• Swansdowns were once highly prized for luxury bedding.
• The seamstress preferred swansdowns for making warm winter pajamas.
• Natural swansdowns provide excellent insulation properties.