a forward on a soccer team
"The striker broke through the defense and scored the winning goal in stoppage time."
someone receiving intensive training for a naval technical rating
"After months of rigorous coursework and drills at the school, the new striker was finally qualified to work on the ship's radar systems."
an employee on strike against an employer
"The striker refused to cross the picket line until management agreed to better working conditions."
the part of a mechanical device that strikes something
"The heavy striker on the printing press was misaligned, causing it to dent every sheet of paper it hit."
An individual who is on strike.
"The union leader met with every striker to negotiate a fair contract before their deadline expired."
A surname.
"The local news reported that a man named Striker was found near the park yesterday."