the.com/shuttlecock

means The cone-shaped, feathered or plastic projectile batted back and forth over a badminton net.

from Compound of 'shuttle' (something that moves back and forth repeatedly, as a weaver's shuttle does across a loom) and 'cock' (referring to the cock's feathers originally used to fletch it). The game predates badminton itself — battledore and shuttlecock was a children's pastime of simply keeping the thing aloft, and the name stuck when the net and rules arrived later.