The term 'Feathered Flier' can be broken down into two crossword solutions: ARROW (5 letters) and DART (4 letters). An ARROW is a projectile with a pointed tip and feathers at the back end, which is used in archery. A DART is a small, thin missile with a pointed tip and feathers at the back end, which is used in the game of darts. Both arrows and darts are examples of feathered fliers, as they both have feathers at the back end that help them fly through the air.