1. a tube-shaped covering of fur or other warm material into which the hands are placed for warmth

1. to handle something badly or clumsily; to fail to catch or hold something properly
Usage: informal

Examples

• She kept her hands warm in a fur muff during the winter walk.
• The elegant lady carried a velvet muff that matched her coat.
• The fielder muffed an easy catch in the ninth inning.
• Don’t muff this opportunity to make a good impression.
• He muffed his lines during the school play.
• The goalkeeper muffed the save and let in an easy goal.