Refers to the projectile used in badminton, typically a cork base with feathers or a plastic skirt.
バドミントンのシャトルコックがネットに引っかかった。
The badminton shuttlecock got caught in the net.
シャトル is the common short form used especially in badminton talk, while シャトルコック is the full, more formal term for the same shuttlecock.
Borrowed from English 'shuttlecock'.