A midfielder is a player in a game like soccer who usually plays between the forwards and the defenders.
In a soccer game, there are many players on the field at once, and they have different roles to play. A midfielder is one of these positions, and it's often considered the most versatile role because this player needs to do a bit of everything - run forward with the ball to attack, help defend by keeping an eye out for opposing players coming up with the ball, and pass the ball to teammates in both attacks and defenses. They're like the "glue" that holds their team together, as they often act as a link between the offense and defense.
A player who operates behind the attackers and in front of the defence.
