Definition of "Tackle" :

noun: (American football) grasping an opposing player with the intention of stopping by throwing to the ground

noun: (American football) a position on the line of scrimmage

"It takes a big man to play tackle."

noun: gear used in fishing

noun: gear consisting of ropes etc. supporting a ship's masts and sails

noun: the person who plays that position on a football team

"The right tackle is a straight A student."

verb: seize and throw down an opponent player, who usually carries the ball

verb: put a harness

verb: accept as a challenge

"I'll tackle this difficult task."