The term 'Feathered Missile' is a phrase used to describe a projectile weapon consisting of a shaft with feathers at the back end and a pointed tip at the front. The two crossword solutions for this term are 'DART' (4 letters) and 'ARROW' (5 letters). Both of these weapons have been used since ancient times, with the ARROW being the most widely used projectile weapon in history. The feathers at the back of the shaft provide stability and accuracy when fired, while the pointed tip allows it to penetrate its target.