A muff is a piece of fur or thick cloth shaped like a short hollow cylinder. You wear a muff on your hands to keep them warm in cold weather. a short tube of thick cloth or fur that you can put your hands into to keep them warm in cold weather earmuffs (mof, from moffula )
{i} fur covering in the shape of a tube which keeps the hands warm; missing a pass, bungling a play (Sports); one who is a failure, awkward person (British)