Tackling means to grab and try to stop someone from moving, especially in a game like football.
Tackling can be rough and physical. It's an important part of some sports.
Examples:
He is tackling the player with the ball.
Tackling in football is important for winning.
The players are tackling each other to get the ball.
She is tackling the problem like a football player!
The big man is tackling the little man like a bear!
Stop tackling me, I'm not playing a game!