Definition of muff

• n. - A soft cover of cylindrical form, usually of fur, worn by women to shield the hands from cold.
• n. - A short hollow cylinder surrounding an object, as a pipe.
• n. - A blown cylinder of glass which is afterward flattened out to make a sheet.
• n. - A stupid fellow; a poor-spirited person.
• n. - A failure to hold a ball when once in the hands.
• n. - The whitethroat.
• v. t. - To handle awkwardly; to fumble; to fail to hold, as a ball, in catching it.