A person who is on strike, especially a worker who is protesting against their employer. The strikers gathered outside the factory to demand better working conditions.
A forward player in soccer, hockey, or similar sports whose primary role is to score goals. The striker scored the winning goal in the final minutes of the match.
A mechanical part that strikes something, such as the hammer of a firearm or the part of a match that ignites it. The striker of the gun was faulty, causing it to misfire.
In cricket, the batsman who is currently facing the bowler. The striker glanced the delivery down to fine leg for a single.